Behemoth's Summons

Behemoth's Summons enters the battlefield with {x} behemoth counters on it.
{3}, remove a behemoth counter from Behemoth's Summons: search your library for a kraken or hydra creature card and put it onto the battlefield.
{p/u}{p/b}{p/g}, remove a behemoth counter from Behemoth's Summons: return target kraken or hydra creature card from your graveyard onto the battlefield.
When you remove the last behemoth counter from Behemoth's Summons, sacrifice it.