Houndeater 2RBBB
Creature - Horror
Haste
Houndeater attacks each turn if able if an opponent controls a Hound or Wolf. Hounds and Wolves block Houndeater if able.
Whenever Houndeater becomes blocked by a Hound or Wolf, put two +1/+1 counters on it and a 1/1 black Hound Skeleton with "B: Regenerate" or a 2/2 black Zombie Wolf creature token onto the battlefield.
4/4
Patrol Team 2W
Creature - Human Ranger Scout
Vigilance
When Patrol Team enters the battlefield, put a 2/2 white Hound creature token onto the battlefield.
1/1
Cloaked Ranger 3GG
Creature - Elf Druid Ranger
When Cloaked Ranger enters the battlefield, choose one - Put a 3/3 green Elephant creature token onto the battlefield; or put a 2/2 green Wolf creature token onto the battlefield and put a +1/+1 counter on Cloaked Ranger; or you may put a +1/+1 counter on each creature you control.
1/1
Hawkwatcher 3W
Creature - Human Ranger Adviser
When Hawkwatcher enters the battlefield, put a 1/1 white Bird creature token with flying onto the battlefield.
At the beginning of your upkeep, put a +1/+1 counter on a Bird you control. If you can't, you may return Hawkwatcher to its owner's hand.
1/2
Goblin Cannoneer R
Creature - Goblin
When Goblin Cannoneer enters the battlefield, put a colorless artifact token onto the battlefield named Cannon. It has, "2R,T, Sacrifice Cannon and a Goblin you control: Cannon deals 3 damage to target creature or player." R,T, Tap an untapped artifact named Cannon you control, sacrifce a Goblin: Goblin Cannoneer deals 1 damage to target player."
1/1
Houndhunter R
Creature - Goblin Ranger
When Houndhunter enters the battlefield, each opponent puts a 2/2 white Hound creature token onto the battlefield.
3/3
Dragonkeeper 4RWW
Creature - Giant Ranger
Vigilance, reach
When Dragonkeeper enters the battlefield, put a 4/4 red Dragon creature token with flying onto the battlefield.
5/5
Pachydermatologist 3GGG
Creature - Giant Ranger
At the beginning of your end step, put three +1/+1 counters on each Elephant you control. If you control no Elephants, put a 3/3 green Elephant creature token onto the battlefield. 1G: Regenerate Pachydermatologist. 1GG: Regenerate Pachydermatologist and all Elephants you control.
6/6
Night Sky Ranger 2B
Creature - Vampire Ranger
Flying
When Night Sky Ranger enters the battlefield, put a 1/1 black Bat creature token with flying onto the battlefield.
Whenever Night Sky Ranger attacks, Night Sky Ranger and attacking Bats you control gain deathtouch until end of turn.
1/2
Cryptwoods Ranger 2BB
Creature - Vampire Ranger
When Cryptwoods Ranger enters the battlefield, put a 2/2 green Wolf creature token onto the battlefield.
At the beginning of your upkeep, if Cryptwoods Ranger is in your graveyard and you control a Wolf, you may pay BB. If you do, return Cryptwoods Ranger from your graveyard to the battlefield.
2/2
Edit: Considering making the Wolf conditional on there being no wolves yet in play. Why would coming back from the dead make another wolf?
Studious Apprentice 2U
Creature - Human Wizard
When Studious Apprentice enters the battlefield, put a 1/1 blue Bird creature token onto the battlefield. 1U,T: Target Bird becomes a 4/4 green Drake Mutant creature until end of turn.
0/2
Cackling Ratsmuggler 3BB
Creature - Hag Witch Ranger
When Cacking Ratsmuggler enters the battlefield, put a 1/1 black Rat creature token onto the battlefield. Whenever a Rat enters the battlefield under your control, you gain 1 life. 1B,T: Put a 1/1 black Rat creature token onto the battlefield for each Rat you control.
3/3
Metashifter 3UU
Creature - Human Wizard
When when Metashifter creature enters the battlefield, put a token that's a copy of target creature with a single creature type onto the battlefield.
1/1
Ranger's Shadow 3B
Enchantment - Aura
Enchant land
When Ranger's Shadow enters the battlefield, enchanted land's controller puts a 2/2 green Wolf creature token onto the battlefield.
Enchanted land has, "B,T: Target creature you control gets +1/+1 until end of turn. If that creature is a Wolf, instead it gets +3/+3 until end of turn."
Tigerkeeper 2WW
Creature - Human Ranger Knight
First strike
When Tigerkeeper enters the battlefield, put a 2/2 white Cat creature token onto the battlefield tapped.
Whenever a Cat enters the battlefield under your control, tap target creature. "He's a big softie, really."
2/2
Made some edits in italics.
More:
Horsefeather Squire W
Creature - Human 2W: Put a 1/1 white Pegasus creature token with flying onto the battlefield if you control no Pegasus creatures. Horsefeather Squire and all Knight creatures you control gain flying until end of turn.
1/1
Bearbonded Shaman 1G
Creature - Human Shaman Ranger 1G: Put a 2/2 green Spirit Bear creature token with haste onto the battlefield. Sacrifice that creature at the beginning of your next upkeep. Activate this ability only once each turn and only as a sorcery 3G: Bearbonded Shaman and Bear creatures you control get +2/+2 until end of turn. Activate this ability only once each turn.
2/2
Agents of Feathers 3WU
Creature - Human Wizard Ranger
Flying
When Agents of Feathers enters the battlefield, put a 1/1 white Bird creature token with flying and a 1/1 bleu Bird creature token with flying onto the battlefield.
White Birds you control get +1/+1 and have protection from blue.
Blue Birds you control get +1/+1 and have protection from white. WU: Birds become all colors until end of turn. Agents of Feathers becomes a Bird until end of turn.
1/1
Polymorphicist 3U
Creature - Human Wizard
When Polymorphicist enters the battlefield, put a 1/1 blue Bird creature token with flying onto the battlefield.
At the beginning of your upkeep, you may sacrifice target Bird you control. If you do, put a 2/2 white Hound creature token onto the battlefield.
At the beginning of your upkeep, you may sacrifice target Hound you control. If you do, put a 3/3 green Elephant creature token onto the battlefield.
At the beginning of your upkeep, you may sacrifice target Elephant you control. If you do, put a 4/4 red Dragon creature token with flying onto the battlefield.
1/1
Ties that Bind 3BB
Enchantment - Aura
Enchant creature
Enchanted creature gets -3/-3.
When Ties that Bind enters the battlefield enchanting a nonDemon creature, put a 7/7 black Demon creature token with flying onto the battlefield. It has, "At the beginning of your upkeep, return all cards in your graveyard named Ties that Bind to the battlefield enchanting this creature."
Whipweb Ranger 1GG
Creature - Human Ranger Archer
Deathtouch, reach
When Whipweb Ranger enters the battlefield, put a 1/2 green Spider creature token with deathtouch and reach onto the battlefield.
1/1
Dangerous Liason 3G
Creature - Human Ranger Assassin
Hexproof
When Dangerous Liason enters the battlefield, put a 1/1 green Snake creature token onto the battlefield. 2B, T, Tap an untapped Snake you control: Destroy target tapped creature.
2/2
Waterdeep Guide 5UU
Creature - Merfolk Ranger
Islandwalk
When Waterdeep Guide enters the battlefield, put a 6/6 blue Serpent creature token onto the battlefield with, "This creature can't attack unless defending player controls an island." 2U,T: Target land becomes an Island until end of turn.
3/3
Paving Crew 4
Artifact Creature - Construct Ranger
When Paving Crew enters the battlefield, put a 3/3 colorless Golem artifact creature token onto the battlefield.
Whenever Paving Crew attacks, add 2 to your mana pool for each attacking Golem.
0/1
Quarrel Rangers 4GW
Creature - Human Elf Ranger
When Quarrel Rangers enters the battlefield, put a 2/2 white Cat and a 2/2 white Hound creature token onto the battlefield.
When Quarrel Rangers dies, target Cat and target Hound fight. GW,T: Put two +1/+1 counters on each Cat and each Hound you control.
2/2
Even More...
Wolfwrangler 5R
Creature - Giant Ranger
When Wolfwrangler enters the battlefield, each opponent puts two 2/2 green Wolf creature tokens onto the battlefield.
Whenever Wolfwrangler attacks a player, gain control of Wolf creatures that player controls until end of turn. Those creatures are attacking that player.
5/5
Wolfkin Ogre 4R
Creature - Ogre Ranger
When Wolfkin Ogre enters the battlefield, put a 2/2 green Wolf creature token onto the battlefield.
Whenever Wolfkin Ogre attacks, Wolfkin Ogre and each Wolf you control gets +2/+0 until end of turn.
2/2
Rat Wrangler BR
Creature - Goblin Ranger
Rat Wrangler enters the battlefield tapped.
When Rat Wrangler enters the battlefield, put a 1/1 black Rat creature token onto the battlefield tapped.
At the beginning of your upkeep, put a +1/+1 counter on target Rat you control. If you do, you lose 1 life.
2/2
Beetle Polisher 3GG
Creature - Human Druid Ranger
When Beetle Polisher enters the battlefield, put a 1/1 green Insect creature token onto the battlefield. 1G,T: Target Insect creature gets +7/+7 until end of turn.
4/4
Out of context - hell, even in context - Houndeater is a really weird hoser. Is the scourge of Hounds and Wolves.dec enough to warrant playing something that costs 2BBBR?
Creature - Horror
Haste
Houndeater attacks each turn if able if an opponent controls a Hound or Wolf. Hounds and Wolves block Houndeater if able.
Whenever Houndeater becomes blocked by a Hound or Wolf, put two +1/+1 counters on it and a 1/1 black Hound Skeleton with "B: Regenerate" or a 2/2 black Zombie Wolf creature token onto the battlefield.
4/4
Patrol Team 2W
Creature - Human Ranger Scout
Vigilance
When Patrol Team enters the battlefield, put a 2/2 white Hound creature token onto the battlefield.
1/1
Cloaked Ranger 3GG
Creature - Elf Druid Ranger
When Cloaked Ranger enters the battlefield, choose one - Put a 3/3 green Elephant creature token onto the battlefield; or put a 2/2 green Wolf creature token onto the battlefield and put a +1/+1 counter on Cloaked Ranger; or you may put a +1/+1 counter on each creature you control.
1/1
Hawkwatcher 3W
Creature - Human Ranger Adviser
When Hawkwatcher enters the battlefield, put a 1/1 white Bird creature token with flying onto the battlefield.
At the beginning of your upkeep, put a +1/+1 counter on a Bird you control. If you can't, you may return Hawkwatcher to its owner's hand.
1/2
Goblin Cannoneer R
Creature - Goblin
When Goblin Cannoneer enters the battlefield, put a colorless artifact token onto the battlefield named Cannon. It has, "2R,T, Sacrifice Cannon and a Goblin you control: Cannon deals 3 damage to target creature or player."
R,T, Tap an untapped artifact named Cannon you control, sacrifce a Goblin: Goblin Cannoneer deals 1 damage to target player."
1/1
Houndhunter R
Creature - Goblin Ranger
When Houndhunter enters the battlefield, each opponent puts a 2/2 white Hound creature token onto the battlefield.
3/3
Dragonkeeper 4RWW
Creature - Giant Ranger
Vigilance, reach
When Dragonkeeper enters the battlefield, put a 4/4 red Dragon creature token with flying onto the battlefield.
5/5
Pachydermatologist 3GGG
Creature - Giant Ranger
At the beginning of your end step, put three +1/+1 counters on each Elephant you control. If you control no Elephants, put a 3/3 green Elephant creature token onto the battlefield.
1G: Regenerate Pachydermatologist.1GG: Regenerate Pachydermatologist and all Elephants you control.
6/6
Night Sky Ranger 2B
Creature - Vampire Ranger
Flying
When Night Sky Ranger enters the battlefield, put a 1/1 black Bat creature token with flying onto the battlefield.
Whenever Night Sky Ranger attacks, Night Sky Ranger and attacking Bats you control gain deathtouch until end of turn.
1/2
Cryptwoods Ranger 2BB
Creature - Vampire Ranger
When Cryptwoods Ranger enters the battlefield, put a 2/2 green Wolf creature token onto the battlefield.
At the beginning of your upkeep, if Cryptwoods Ranger is in your graveyard and you control a Wolf, you may pay BB. If you do, return Cryptwoods Ranger from your graveyard to the battlefield.
2/2
Edit: Considering making the Wolf conditional on there being no wolves yet in play. Why would coming back from the dead make another wolf?
Studious Apprentice 2U
Creature - Human Wizard
When Studious Apprentice enters the battlefield, put a 1/1 blue Bird creature token onto the battlefield.
1U,T: Target Bird becomes a 4/4 green Drake Mutant creature until end of turn.
0/2
Cackling Ratsmuggler 3BB
Creature - Hag Witch Ranger
When Cacking Ratsmuggler enters the battlefield, put a 1/1 black Rat creature token onto the battlefield.
Whenever a Rat enters the battlefield under your control, you gain 1 life.
1B,T: Put a 1/1 black Rat creature token onto the battlefield for each Rat you control.
3/3
Metashifter 3UU
Creature - Human Wizard
When when Metashifter creature enters the battlefield, put a token that's a copy of target creature with a single creature type onto the battlefield.
1/1
Ranger's Shadow 3B
Enchantment - Aura
Enchant land
When Ranger's Shadow enters the battlefield, enchanted land's controller puts a 2/2 green Wolf creature token onto the battlefield.
Enchanted land has, "B,T: Target creature you control gets +1/+1 until end of turn. If that creature is a Wolf, instead it gets +3/+3 until end of turn."
Tigerkeeper 2WW
Creature - Human Ranger Knight
First strike
When Tigerkeeper enters the battlefield, put a 2/2 white Cat creature token onto the battlefield tapped.
Whenever a Cat enters the battlefield under your control, tap target creature.
"He's a big softie, really."
2/2
Made some edits in italics.
More:
Horsefeather Squire W
Creature - Human
2W: Put a 1/1 white Pegasus creature token with flying onto the battlefield if you control no Pegasus creatures. Horsefeather Squire and all Knight creatures you control gain flying until end of turn.
1/1
Bearbonded Shaman 1G
Creature - Human Shaman Ranger
1G: Put a 2/2 green Spirit Bear creature token with haste onto the battlefield. Sacrifice that creature at the beginning of your next upkeep. Activate this ability only once each turn and only as a sorcery
3G: Bearbonded Shaman and Bear creatures you control get +2/+2 until end of turn. Activate this ability only once each turn.
2/2
Agents of Feathers 3WU
Creature - Human Wizard Ranger
Flying
When Agents of Feathers enters the battlefield, put a 1/1 white Bird creature token with flying and a 1/1 bleu Bird creature token with flying onto the battlefield.
White Birds you control get +1/+1 and have protection from blue.
Blue Birds you control get +1/+1 and have protection from white.
WU: Birds become all colors until end of turn. Agents of Feathers becomes a Bird until end of turn.
1/1
Polymorphicist 3U
Creature - Human Wizard
When Polymorphicist enters the battlefield, put a 1/1 blue Bird creature token with flying onto the battlefield.
At the beginning of your upkeep, you may sacrifice target Bird you control. If you do, put a 2/2 white Hound creature token onto the battlefield.
At the beginning of your upkeep, you may sacrifice target Hound you control. If you do, put a 3/3 green Elephant creature token onto the battlefield.
At the beginning of your upkeep, you may sacrifice target Elephant you control. If you do, put a 4/4 red Dragon creature token with flying onto the battlefield.
1/1
Ties that Bind 3BB
Enchantment - Aura
Enchant creature
Enchanted creature gets -3/-3.
When Ties that Bind enters the battlefield enchanting a nonDemon creature, put a 7/7 black Demon creature token with flying onto the battlefield. It has, "At the beginning of your upkeep, return all cards in your graveyard named Ties that Bind to the battlefield enchanting this creature."
Whipweb Ranger 1GG
Creature - Human Ranger Archer
Deathtouch, reach
When Whipweb Ranger enters the battlefield, put a 1/2 green Spider creature token with deathtouch and reach onto the battlefield.
1/1
Dangerous Liason 3G
Creature - Human Ranger Assassin
Hexproof
When Dangerous Liason enters the battlefield, put a 1/1 green Snake creature token onto the battlefield.
2B, T, Tap an untapped Snake you control: Destroy target tapped creature.
2/2
Waterdeep Guide 5UU
Creature - Merfolk Ranger
Islandwalk
When Waterdeep Guide enters the battlefield, put a 6/6 blue Serpent creature token onto the battlefield with, "This creature can't attack unless defending player controls an island."
2U,T: Target land becomes an Island until end of turn.
3/3
Paving Crew 4
Artifact Creature - Construct Ranger
When Paving Crew enters the battlefield, put a 3/3 colorless Golem artifact creature token onto the battlefield.
Whenever Paving Crew attacks, add 2 to your mana pool for each attacking Golem.
0/1
Quarrel Rangers 4GW
Creature - Human Elf Ranger
When Quarrel Rangers enters the battlefield, put a 2/2 white Cat and a 2/2 white Hound creature token onto the battlefield.
When Quarrel Rangers dies, target Cat and target Hound fight.
GW,T: Put two +1/+1 counters on each Cat and each Hound you control.
2/2
Even More...
Wolfwrangler 5R
Creature - Giant Ranger
When Wolfwrangler enters the battlefield, each opponent puts two 2/2 green Wolf creature tokens onto the battlefield.
Whenever Wolfwrangler attacks a player, gain control of Wolf creatures that player controls until end of turn. Those creatures are attacking that player.
5/5
Wolfkin Ogre 4R
Creature - Ogre Ranger
When Wolfkin Ogre enters the battlefield, put a 2/2 green Wolf creature token onto the battlefield.
Whenever Wolfkin Ogre attacks, Wolfkin Ogre and each Wolf you control gets +2/+0 until end of turn.
2/2
Rat Wrangler BR
Creature - Goblin Ranger
Rat Wrangler enters the battlefield tapped.
When Rat Wrangler enters the battlefield, put a 1/1 black Rat creature token onto the battlefield tapped.
At the beginning of your upkeep, put a +1/+1 counter on target Rat you control. If you do, you lose 1 life.
2/2
Beetle Polisher 3GG
Creature - Human Druid Ranger
When Beetle Polisher enters the battlefield, put a 1/1 green Insect creature token onto the battlefield.
1G,T: Target Insect creature gets +7/+7 until end of turn.
4/4
Banner by Topher!
Most of these are very good though.
I̟̥͍̠ͅn̩͉̣͍̬͚ͅ ̬̬͖t̯̹̞̺͖͓̯̤h̘͍̬e͙̯͈̖̼̮ ̭̬f̺̲̲̪i͙͉̟̩̰r̪̝͚͈̝̥͍̝̲s̼̻͇̘̳͔ͅt̲̺̳̗̜̪̙ ̳̺̥̻͚̗ͅm̜̜̟̰͈͓͎͇o̝̖̮̝͇m̯̻̞̼̫̗͓̤e̩̯̬̮̩n͎̱̪̲̹͖t͇̖s̰̮ͅ,̤̲͙̻̭̻̯̹̰ ̖t̫̙̺̯͖͚̯ͅh͙̯̦̳̗̰̟e͖̪͉̼̯ ̪͕g̞̣͔a̗̦t̬̬͓͙̫̖̭̻e̩̻̯ ̜̖̦̖̤̭͙̬t̞̹̥̪͎͉ͅo͕͚͍͇̲͇͓̺ ̭̬͙͈̣̻t͈͍͙͓̫̖͙̩h̪̬̖̙e̗͈ ̗̬̟̞̺̤͉̯ͅa̦̯͚̙̜̮f͉͙̲̣̞̼t̪̤̞̣͚e̲͉̳̥r͇̪̙͚͓l̥̞̞͎̹̯̹ͅi͓̬f̮̥̬̞͈ͅe͎ ̟̩̤̳̠̯̩̯o̮̘̲p̟͚̣̞͉͓e͍̩̣n͔̼͕͚̜e̬̱d̼̘͎̖̹͍̮̠,͖̺̭̱̮ ̣̲͖̬̪̭̥a̪͚n̟̲̝̤̤̞̗d̘̱̗͇̮͕̳͕͔ ͖̞͉͎t̹̙͎h̰̱͉̗e̪̞̱̝̹̩ͅ ̠̱̩̭̦p̯̙e͓o̳͚̰̯̺̱̰͔̘p̬͎̱̣̼̩͇l̗̟̖͚̠e̱͉͔̱̦̬̟̙ ̖͚̪͔̼̦w̺̖̤̱e͖̗̻̦͓̖̘̜r̭̥e͔̹̫̱͕̦̰͕ ̗͔̠p̠̗͍͍̱̳̠r̰͔͎̰o͉̥͓̰͚̥s̟͚̹̱͔̣t͉̙̳̖͖̪̮r̥̘̥͙̹a͉̟̫̟̳̠̟̭t͈̜̰͈͎e̞̣̭̲̬ ͚̗̯̟͙i͍͖̰̘̦͖͉ṇ̮̻̯̦̲̩͍ ̦̮͚̫̤t͉͖̫͕ͅͅh͙̮̻̘̣̮̼e͕̺ ͙l͕̠͎̰̥i̲͓͉̲g̫̳̟͈͇̖h̠̦̖t͓̯͎̗ ̳̪̘̟̙̩̦o̫̲f̙͔̰̙̠ ̹̪̗͇̯t͖̼̼͉͖̬h̹͇̩e͚̖̺̤͉̹͕̪ ͚͓̭̝̺G͎̗̯̩o̫̯̮̟̮̳̘d̜̲͙̠-̩̳̯̲̗̜P̹̘̥͉̝h͍͈̗̖̝ͅa͍̗̮̼̗r̜̖͇̙̺a̭̺͔̞̳͈o̪̣͓̯̬͙̯̰̗h̖̦͈̥̯͔.͇̣̙̝