Burgeoning Risen

When Burgeoning Risen enters the battlefield, you may sacrifice a Forest to place two +1/+1 counters on Burgeoning Risen.
The growths of the Wood have encompassed the corpse's organs, swelled its skull like a gourd, twined around its heart. Its bones are
rotten wood, and soon it will take root, but until then it will be a swift and subtle servant.