Cosi\'s Ravager can be useful!

Whenever a nonartifact permanent you control enters, you may return another permanent you control that shares a permanent type with it to its owner's hand.

(This land isn't a spell, it's affected by summoning sickness, and it has ": Add .")

Creatures don't untap during their controllers' untap steps. Whenever a creature enters, untap all creatures.

Lands you control are every basic land type in addition to their other types.

Landfall — Whenever a land you control enters, you may have this creature deal 1 damage to target player or planeswalker.

, : You may tap or untap another target creature. Landfall — Whenever a land you control enters, you may untap this creature.

: You may put a land card from your hand onto the battlefield.