Reawakened Hydra

When Reawakened Hydra enters the battlefield, you may sacrifice any number of creatures. Reawakened Hydra fights target creature you don't control for each creature sacrificed this way.
Arisen 4 (Rather than cast this card from your hand, you may discard it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its