Jarl of Winterheim -- 4UR
Snow Creature -- Giant Soldier
Haste
When Jarl of Winterheim deals combat damage to a player, tap target artifact or creature that player controls. That permanent doesn't untap during its controller's next untap step.
5/5
The arid plane of Hawa is one of strife. Ever since the exodus to the outlands from the cities, bandits, thugs and outlaws are commonplace between the towns, raiding them of the Wamaka ores they mine before the lawbringers can arrive to arrest them. The cityfolk don't care for the outlander's pleas or the mountain shaman's warnings; as long as they get their hands on that metal, and as long as no one else knows its true purpose, nothing else matters.
Prowl
Hardships (Your hardships are equal to the number of -1/-1 counters among permanents you control.
Nomad
• Token Creature - Nomad (S)
2/2
Faithful CompanionW
Creature - Hound (C)
Vigilance "She's served me as loyally as any one could. I'm blessed have her as a friend."
-Rega Dawnshot
1/1
Overhead Lawrunner3G
Creature - Elf Scout (C)
Haste
Overhead Lawrunner can't be blocked except by creatures with flying.
When Overhead Lawrunner enters the battlefield, another target creature you control gets +2/+2 until end of turn.
2/1
Viashino Desertstalker1R
Creature - Viashino Warrior (C)
Haste
Whenever Viashino Desertstalker attacks or blocks, return it to its owner's hand at the end of combat. "Bandits are the last of our problems on the salt roads."
-Mishi, Bazaar Trader
3/2
Reckless Spearing1B
Sorcery (C)
Put four -1/-1 counters on target creature. Reckless Spearing deals 4 damage to you. "When an enemy is to die, they will die even if you must pass the blade through your own belly first." - Tazuh of the Ibohum deathcult
Thirst for Progress2U
Sorcery (C)
Draw three cards, then discard a card unless you control an artifact. The city barons poured their resources into harnessing Wamaka, eager for any result.
Hungry Skelemental1B
Creature - Elemental Skeleton (C) 2B, t, Sacrifice Hungry Skelemental: Put a -1/-1 counter on target creature. 2B: Return Hungry Skelemental from your graveyard to the battlefield tapped.
1/2
Silvereye's Henchman3R
Creature - Orc Rogue (C)
Prowl 1R(You may cast this for its Prowl cost if you dealt combat damage to a player this turn with an Orc or Rogue)
When Silvereye's Henchman enters the battlefield, discard a card, then draw a card. "Pile up the goods on the wagon. The boss is expecting it by sundown."
3/3
Ore Runs Dry1B
Instant (C)
Exile a number of cards from target player's graveyard equal to their hardships. (A player's hardships is the number of -1/-1 counters among permanents they control.)
Draw a card. "This town is quickly ceasing to have a point." - Aya Be'ute
Outland Summoner3GG
Creature - Centaur Shaman (C)
Trample
When Outland Summoner enters the battlefield, create a 2/2 green Bear creature token. The outlanders may live in solitude, but that doesn't mean they're alone.
3/3
Caltrops LayerW
Creature - Human Scout (C) 1W, T: Put a -1/-1 counter on target attacking creature. "Some good that cavalry's doin' ya!"
0/1
Uncommon 1 of 3:
Death of Thirst -- 1UU
Sorcery (U)
Tap up to X target permanents, where X is the number of your hardships. Those permanents don't untap during their controller's next untap step. (Your hardships are equal to the number of -1/-1 counters on permanents you control.)
Mechanical Vandal -- 3
Artifact Creature -- Construct Rogue (U)
Prowl 0(You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Construct or Rogue.)
2/2
Axerac, King Crab -- 2GWU
Legendary Creature -- Crab
Trample
Axerac, King Crab enters the battlefield with five +1/+1 counters on it.
If Axerac would be dealt damage and it has a +1/+1 counter on it, prevent that damage and remove a +1/+1 counter from it.
At the beginning of your upkeep, you may pay GWU. If you do, put a +1/+1 counter on Axerac.
0/0
Beelzebee Swarm -- 3BB
Creature -- Insect
Flying, Deathtouch
Beelzebee Swarm enters the battlefield with three +1/+1 counters on it. 1BB, T, Remove a +1/+1 counter from Beelzebee Swarm: It deals 1 damage to any target.
0/0
Helix Titan -- 5RW
Creature -- Giant Soldier
When Helix Titan enters the battlefield, it deals 5 damage to target player or planeswalker and you gain 5 life.
3/6
Soul's Guardian -- 1W
Creature -- Human Cleric (U)
First Strike
Whenever another creature enters the battlefield under your control, choose one --
*You gain 2 life.
*Put a +1/+1 counter on Soul's Guardian.
1/1
Nissa, Steward of Elements is a nice abuse outlet here. Cast her for 5 and you can play her ultimate right off the bat if you want, and use her 0 to get any creature costing 6 or less...
I'm not entirely sure that this card needs the cantrip on it. It's plenty good on its own. I'm not sure making your discard an additional cost would make it better or worse, but it'd be a change that I'd consider.
Snow Creature -- Giant Soldier
Haste
When Jarl of Winterheim deals combat damage to a player, tap target artifact or creature that player controls. That permanent doesn't untap during its controller's next untap step.
5/5
Hardships (Your hardships are equal to the number of -1/-1 counters among permanents you control.
Nomad
• Token Creature - Nomad (S)
2/2
Faithful Companion W
Creature - Hound (C)
Vigilance
"She's served me as loyally as any one could. I'm blessed have her as a friend."
-Rega Dawnshot
1/1
Overhead Lawrunner 3G
Creature - Elf Scout (C)
Haste
Overhead Lawrunner can't be blocked except by creatures with flying.
When Overhead Lawrunner enters the battlefield, another target creature you control gets +2/+2 until end of turn.
2/1
Viashino Desertstalker 1R
Creature - Viashino Warrior (C)
Haste
Whenever Viashino Desertstalker attacks or blocks, return it to its owner's hand at the end of combat.
"Bandits are the last of our problems on the salt roads."
-Mishi, Bazaar Trader
3/2
Reckless Spearing 1B
Sorcery (C)
Put four -1/-1 counters on target creature. Reckless Spearing deals 4 damage to you.
"When an enemy is to die, they will die even if you must pass the blade through your own belly first." - Tazuh of the Ibohum deathcult
Thirst for Progress 2U
Sorcery (C)
Draw three cards, then discard a card unless you control an artifact.
The city barons poured their resources into harnessing Wamaka, eager for any result.
Hungry Skelemental 1B
Creature - Elemental Skeleton (C)
2B, t, Sacrifice Hungry Skelemental: Put a -1/-1 counter on target creature.
2B: Return Hungry Skelemental from your graveyard to the battlefield tapped.
1/2
Silvereye's Henchman 3R
Creature - Orc Rogue (C)
Prowl 1R (You may cast this for its Prowl cost if you dealt combat damage to a player this turn with an Orc or Rogue)
When Silvereye's Henchman enters the battlefield, discard a card, then draw a card.
"Pile up the goods on the wagon. The boss is expecting it by sundown."
3/3
Ore Runs Dry 1B
Instant (C)
Exile a number of cards from target player's graveyard equal to their hardships. (A player's hardships is the number of -1/-1 counters among permanents they control.)
Draw a card.
"This town is quickly ceasing to have a point." - Aya Be'ute
Outland Summoner 3GG
Creature - Centaur Shaman (C)
Trample
When Outland Summoner enters the battlefield, create a 2/2 green Bear creature token.
The outlanders may live in solitude, but that doesn't mean they're alone.
3/3
Caltrops Layer W
Creature - Human Scout (C)
1W, T: Put a -1/-1 counter on target attacking creature.
"Some good that cavalry's doin' ya!"
0/1
Uncommon 1 of 3:
Death of Thirst -- 1UU
Sorcery (U)
Tap up to X target permanents, where X is the number of your hardships. Those permanents don't untap during their controller's next untap step. (Your hardships are equal to the number of -1/-1 counters on permanents you control.)
Mechanical Vandal -- 3
Artifact Creature -- Construct Rogue (U)
Prowl 0 (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Construct or Rogue.)
2/2
Legendary Creature -- Crab
Trample
Axerac, King Crab enters the battlefield with five +1/+1 counters on it.
If Axerac would be dealt damage and it has a +1/+1 counter on it, prevent that damage and remove a +1/+1 counter from it.
At the beginning of your upkeep, you may pay GWU. If you do, put a +1/+1 counter on Axerac.
0/0
Next: Angel, mad, prophet
Creature -- Insect
Flying, Deathtouch
Beelzebee Swarm enters the battlefield with three +1/+1 counters on it.
1BB, T, Remove a +1/+1 counter from Beelzebee Swarm: It deals 1 damage to any target.
0/0
Helix Titan -- 5RW
Creature -- Giant Soldier
When Helix Titan enters the battlefield, it deals 5 damage to target player or planeswalker and you gain 5 life.
3/6
Soul's Guardian -- 1W
Creature -- Human Cleric (U)
First Strike
Whenever another creature enters the battlefield under your control, choose one --
*You gain 2 life.
*Put a +1/+1 counter on Soul's Guardian.
1/1
"Keep!"
Legendary Creature -- Elder Elemental
Flash
Flying
1U, T: Return Windspar, the Shifting Sky and target nonland permanent to their owners' hands.
3UU, T: Return target permanent to its owner's hand.
5/5
Instant (C)
Target permanent becomes colorless until end of turn.
Draw a card.
Here's a simple (and short) storm fuel card.
Feed the Storm -- R
Sorcery (U)
Add R.
Storm
Seriously, Limited bomb, we'll see if someone can filth this up in Commander...
Teferi would be my guess...