Dai Li Agents

When this creature enters, put a +1/+1 counter on target creature.

Whenever a creature you control with a +1/+1 counter on it attacks, each opponent loses 1 life and you gain 1 life.

Flying

Devour 1 (As this creature enters, you may sacrifice any number of creatures. It enters with that many +1/+1 counters on it.)

Whenever this creature enters or attacks, target opponent loses X life and you gain X life, where X is the number of +1/+1 counters on it.

Whenever The Boulder attacks, earthbend X, where X is the number of creatures you control with power 4 or greater. (Target land you control becomes a 0/0 creature with haste that's still a land. Put X +1/+1 counters on it. When it dies or is exiled, return it to the battlefield tapped.)

Menace (This creature can't be blocked except by two or more creatures.)

Vivid — When this creature enters, each opponent loses X life and you gain X life, where X is the number of colors among permanents you control.

Converge — When this creature enters, each opponent loses X life and you gain X life, where X is the number of colors of mana spent to cast this spell.

When Bumi enters, earthbend 1. (Target land you control becomes a 0/0 creature with haste that's still a land. Put a +1/+1 counter on it. When it dies or is exiled, return it to the battlefield tapped.)

Whenever Bumi attacks, put two +1/+1 counters on each land creature you control.