Yon, Evil Banana Slug

Yon, Evil Banana Slug gets +1/+1 for each Forest
and green permanent on the battlefield.
Last strike (This creature deals combat damage
after creatures without last strike.)
{1}{b/g}: Put a slime counter on Yon.
Remove three slime counters from Yon:
Target creature gains last strike and Yon loses last strike until end of turn