Squirrel Grave

Whenever a Squirrel card is put into a graveyard, Squirrel Grave gets a Death counter.
{t}, Remove three Death counters from Squirrel Grave: Return target Squirrel creature from any graveyard to the battlefield under your control.
{t}{b}{b}, Remove ten Death counters from Squirrel Grave: Create a Black Zombie Squirrel Horror token with "This creature has power and toughness equal to the number of cards in all graveyards."