Ksarbaru, The Living Forest

Forests you control are 5/5 Wurm creatures.
They are still forests
Trample
Whenever a forest you control is destroyed, put a -1/-1 counter on Ksarbaru, The Living Forest
Whenever you play a forest, remove a -1/-1 counter from Ksarbaru, The Living Forest
{5}{g}: Search your library and graveyard for a forest card and put it into your hand