Unsettling Concept1B
Sorcery
Reveal your hand to target opponent. He or she picks a nonland card from your hand and exiles it. Search your library for a card with same type as the exiled card and put it into your hand. Shuffle your library.
Sacrificial Lamb(W/B)
Creature - Beast
Whenever ~ dies, put a +1/+1 counter on target creature you control. If ~ was sacrificed, put a +1/+1 counter on each creature you control instead.
1/1
The Emanating OnesWW
Creature - Human Nomad
Whenever a creature dies, if it has an aura attached to it, you may attach that aura to ~ instead of putting it into its owner's graveyard.
2/2
Paranormal Form2WU
Creature - Shapeshifter Spirit
You may have ~ enter the battlefield as any creature in a graveyard that died this turn, except it's a Spirit in addition to its other types.
Whenever a creature dies, if ~ is in your graveyard, you may put it on top of your library.
0/0
The Witch Mother4BBB
Legendary Creature - Demon Witch
Whenever a creature enters the battlefield, it becomes becomes a 1/1 green frog creature without abilities until end of turn. T: Until end of turn, frog creatures become 4/4 red beast creatures with trample and haste.
If a beast creature would die, it becomes a 0/1 black insect creature with flying instead.
Sacrifice an insect, a frog, and beast creature: Draw three cards. You lose 3 life.
6/6
GenevensiS, BlackTempleGuardian (and I just want to say, this vote won my heart because it is oozing flavor - and that is really awesome!)
Origin of SpeciesUG
Sorcery
Until end of turn, whenever you scry, you may cast creature cards from your library as though they were in your hand.
Scry 3
Puzzling Concept1UUU
Instant
Counter target nonlegendary creature spell. If it's countered this way, each other creature on the battlefield become a copy of that creature. (This effect does not last until end of turn.)
Relentless WarriorRR
Creature - Human Warrior
Haste, First strike
At the beginning of your second attack phase each turn, ~ gets +2/+0 and gains double strike until end of turn.
2/1
Herbal Season1GG
Enchantment - Aura
Enchant land.
Lands with the same name as enchanted land produce an additional mana its type could produce when tapped for mana.
Whenever a land with same name as enchanted land enters the battlefield, untap enchanted land.
Highgrass Antelope1W
Creature - Antelope
Plainswalk
When ~ enters the battlefield, choose a land. The chosen land is a plains in addition it's other types until ~ leaves the battlefield.
1/1
Unsettling Concept 1B
Sorcery
Reveal your hand to target opponent. He or she picks a nonland card from your hand and exiles it. Search your library for a card with same type as the exiled card and put it into your hand. Shuffle your library.
Sacrificial Lamb (W/B)
Creature - Beast
Whenever ~ dies, put a +1/+1 counter on target creature you control. If ~ was sacrificed, put a +1/+1 counter on each creature you control instead.
1/1
Lab Rat (U/B)
Creature - Rat
If a spell or ability could target ~, it does.
1/1
Absolute Mayhem 2RR
Sorcery
Untap all creatures. Each creature fights another creature its controller controls if able.
The Emanating Ones WW
Creature - Human Nomad
Whenever a creature dies, if it has an aura attached to it, you may attach that aura to ~ instead of putting it into its owner's graveyard.
2/2
Paranormal Form 2WU
Creature - Shapeshifter Spirit
You may have ~ enter the battlefield as any creature in a graveyard that died this turn, except it's a Spirit in addition to its other types.
Whenever a creature dies, if ~ is in your graveyard, you may put it on top of your library.
0/0
The Witch Mother 4BBB
Legendary Creature - Demon Witch
Whenever a creature enters the battlefield, it becomes becomes a 1/1 green frog creature without abilities until end of turn.
T: Until end of turn, frog creatures become 4/4 red beast creatures with trample and haste.
If a beast creature would die, it becomes a 0/1 black insect creature with flying instead.
Sacrifice an insect, a frog, and beast creature: Draw three cards. You lose 3 life.
6/6
Origin of Species UG
Sorcery
Until end of turn, whenever you scry, you may cast creature cards from your library as though they were in your hand.
Scry 3
Puzzling Concept 1UUU
Instant
Counter target nonlegendary creature spell. If it's countered this way, each other creature on the battlefield become a copy of that creature. (This effect does not last until end of turn.)
Bloodsport Exhibition R
Sorcery
Untap target creature that fought this turn. It gets +3/+0 until end of turn, then fights target creature.
Arcane Grunt 1R
Creature - Human Wizard
Whenever another creature becomes the target of a spell or ability, ~ deals 1 damage to it.
1/1
Relentless Warrior RR
Creature - Human Warrior
Haste, First strike
At the beginning of your second attack phase each turn, ~ gets +2/+0 and gains double strike until end of turn.
2/1
Herbal Season 1GG
Enchantment - Aura
Enchant land.
Lands with the same name as enchanted land produce an additional mana its type could produce when tapped for mana.
Whenever a land with same name as enchanted land enters the battlefield, untap enchanted land.
Highgrass Antelope 1W
Creature - Antelope
Plainswalk
When ~ enters the battlefield, choose a land. The chosen land is a plains in addition it's other types until ~ leaves the battlefield.
1/1
Loyal Bloodlines 1WGR
Enchantment - Aura
Enchant creature.
Creatures you control that share a creature type with enchanted creature are indestructible.