Ulf Engir, Chained Monster

Indestructable, Menace, Trample
Ulf Engir, Chained Monster enters the battlefield tapped and does not untap during your untap
step
{b/g}{p/b}{p/g}:Create a 2/2 green wolf.
When Ulf Engir, Chained Monster becomes untapped, it gets +X/+X where X is the number
of wolves on the battlefield.
Ulf Engir, Chained Monster's power and
toughness is equal to the number of wolves you control