Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Trample

Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature.

At the beginning of your upkeep, put a -1/-1 counter on this creature.

Whenever you cast a noncreature spell, remove a -1/-1 counter from this creature.

: Until end of turn, whenever you cast a black spell, put a +1/+1 counter on this creature.

Whenever you cast your first spell during each opponent's turn, put a +1/+1 counter on this creature.

Changeling (This card is every creature type.)

Whenever an opponent casts a spell, you may put a +1/+1 counter on this creature.

Whenever you cast a noncreature spell, this creature gets +3/+0 until end of turn.

Kavu creatures have trample.

Whenever another Kavu enters, put a +1/+1 counter on this creature.

First strike

Whenever another creature dies, you may put a +1/+1 counter on this creature.

Haste

Whenever you cast a noncreature spell, this creature gets +2/+2 until end of turn.

Menace

Modular 2 (This creature enters with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Whenever you cast a spell other than your first spell each turn, put a +1/+1 counter on this creature.

Flying

Whenever you cast a noncreature spell or a Dragon spell, this creature gets +2/+0 until end of turn.

Whenever you cast a noncreature spell, this creature deals 1 damage to each opponent.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Whenever a player casts a spell, tap this creature.

Whenever you discard a creature card, put a +1/+1 counter on this creature.

Whenever you discard a land card, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

Whenever you discard a noncreature, nonland card, this creature fights up to one target creature you don't control.

Whenever you sacrifice an artifact, put a +1/+1 counter on this creature and add .