Ol' Fir-Kin

Treefolk, fungus, and druid creatures you control
get +2/+0 and have forestwalk as long as
Ol' Fir-Kin is in a graveyard
{t}: add {u} or {b} or {g}, Scry 1
Whenever a treefolk or land you control enters
the graveyard you may tap Ol' Fir-Kin and a
creature you control. Destroy target creature.