Furious Grove Watcher

Vigilance
Keeper's fury - Forests (Whenever a Forest you control leaves the battlefield, if this creature is in your Graveyard, you may put it into play. It then gains Haste and Rampage X, where X is the number of Forests in your Graveyard, until end of turn)
{1}{b}{b}: Destroy target creature that dealt damage to any Green creature you control this turn.

"Dude, it looks pissed off"