Shes a 2/3 druid that lets you draw a card whenever you sacrifice a creature, but also has an activated ability that requires two generic mana and triggers that card draw
Evolving Wilds over Cinder Barrens in a two-color deck is a little questionable, but it helps with delirium on Pick the Brain in sideboarded games and it helps Smoldering Marsh enter the battlefield untapped
Bumi, Unleashed is sweet, and in the earthbending decks, hell prove to be a menace
He's also backup removal with his -3 to Murder something
It might hurt you a little bit to eat it, but you get more cards and more Food when you do
Shadow, Mysterious Assassin Most sacrifice decks want to sacrifice small, recursive creatures or easily created tokens, going for quantity