Viridian Lorebearers

: Target creature gets +X/+X until end of turn, where X is the number of creatures you control.

When this creature enters, until end of turn, target creature you control gains vigilance and gets +X/+X, where X is the number of creatures you control.

When this creature enters, target creature you control gets +X/+0 until end of turn, where X is your devotion to green. (Each in the mana costs of permanents you control counts toward your devotion to green.)

: Target land you control becomes an X/X Elemental creature until end of turn, where X is the number of Allies you control. It's still a land.

, : Reveal any number of green cards in your hand. Target creature gets +X/+X until end of turn, where X is the number of cards revealed this way.

Riot (This creature enters with your choice of a +1/+1 counter or haste.)

Whenever this creature attacks, another target creature you control gets +X/+0 until end of turn, where X is this creature's power.