Ocathis, the Spore Spawned

Other Plant creatures you control get +1/+1.
Whenever a creature would die, create a 0/1
green Plant creature token for each creature that
died this turn.
{t}, Sacrifice X creatures: Return target creature
with converted mana cost X from a graveyard to
the battlefield tapped under your control. It's a
Plant in addition to it's other types.