Aestus

Aestus's power and toughness are each equal to the amount of cards in your hand.
Whenever Aestus blocks or becomes blocked by a creature, return that creature to it's owner's hand except for Krakens, Leviathans, Octopuses, and Serpents.
"And just in a moment, the entire village is turned into a soulless wreckage."
- Witness