Nature's Fury

Haste, Shroud, Trample
Natures Fury Must be blocked by at least 2 Creatures. For each creature destroyed by Natures Fury during combat, place x +1/+1 counters on Natures Fury, where x is Natures Fury's power.
At the beginning of your upkeep, if Natures Fury has been in play for 5 or more turns, Shuffle Natures Fury into it's owners Library.