Standard MTG sets

Haste Whenever another Ally you control enters, put a +1/+1 counter on that creature and it gains haste until end of turn.

First strike Whenever a player casts a noncreature spell, they lose 2 life.

Each creature with mana value X or less loses all abilities until end of turn. Destroy those creatures.

Firebending 1 (Whenever this creature attacks, add {R}. This mana lasts until end of combat.) Tap an untapped Ally you control: Exile target card f...

Firebending 1 (Whenever this creature attacks, add {R}. This mana lasts until end of combat.) Tap an untapped Ally you control: Exile target card f...

Flash Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When Ty Lee enters, tap up to one target creatur...

Flash Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When Ty Lee enters, tap up to one target creatur...

As an additional cost to cast this spell, you may waterbend {6}. (While paying a waterbend cost, you can tap your artifacts and creatures to help. ...

As an additional cost to cast this spell, you may waterbend {6}. (While paying a waterbend cost, you can tap your artifacts and creatures to help. ...

Other creatures you control get +1/+0. Whenever another permanent you control leaves the battlefield during your turn, create a 1/1 white Ally crea...

Other creatures you control get +1/+0. Whenever another permanent you control leaves the battlefield during your turn, create a 1/1 white Ally crea...

Whenever you cast a noncreature spell, create a Clue token. (It's an artifact with "{2}, Sacrifice this token: Draw a card.") {T}: Until end of tur...

Whenever you cast a noncreature spell, create a Clue token. (It's an artifact with "{2}, Sacrifice this token: Draw a card.") {T}: Until end of tur...

Other creatures you control get +1/+0. Whenever another permanent you control leaves the battlefield during your turn, create a 1/1 white Ally crea...

Other creatures you control get +1/+0. Whenever another permanent you control leaves the battlefield during your turn, create a 1/1 white Ally crea...

Whenever this creature or another Ally you control enters, you gain 1 life. If this is the second time this ability has resolved this turn, draw a ...

Whenever this creature or another Ally you control enters, you gain 1 life. If this is the second time this ability has resolved this turn, draw a ...

Vigilance You may look at the top card of your library any time. You may cast Ally spells from the top of your library. Sacrifice Hakoda: Creatures...

Vigilance You may look at the top card of your library any time. You may cast Ally spells from the top of your library. Sacrifice Hakoda: Creatures...

Choose up to one target creature, then airbend all other creatures. (Exile them. While each one is exiled, its owner may cast it for {2} rather tha...

Choose up to one target creature, then airbend all other creatures. (Exile them. While each one is exiled, its owner may cast it for {2} rather tha...

When this enchantment enters, airbend up to one target creature. Whenever a creature you control enters, put a quest counter on this enchantment. A...

When this enchantment enters, airbend up to one target creature. Whenever a creature you control enters, put a quest counter on this enchantment. A...

Nontoken artifacts you control are lands in addition to their other types. (They don't gain the ability to {T} for mana.) At the beginning of your ...