Amonkhet

When Quarry Hauler enters the battlefield, for each kind of counter on target permanent, put another counter of that kind on it or remove one from it.

Haste When Crocodile of the Crossing enters the battlefield, put a -1/-1 counter on target creature you control.

When Channeler Initiate enters the battlefield, put three -1/-1 counters on target creature you control. {T}, Remove a -1/-1 counter from Channeler...

You may exert Glory-Bound Initiate as it attacks. When you do, it gets +1/+3 and gains lifelink until end of turn. (An exerted creature won't untap...

You may exert Champion of Rhonas as it attacks. When you do, you may put a creature card from your hand onto the battlefield. (An exerted creature ...

When Warfire Javelineer enters the battlefield, it deals X damage to target creature an opponent controls, where X is the number of instant and sor...

When Labyrinth Guardian becomes the target of a spell, sacrifice it.

Vigilance

At the beginning of combat on your turn, target creature token you control gets +1/+1 until end of turn and can't be blocked this turn.