Fallen Shinobi
I have done this on Turn 5 in a pod, and it is a meme
A 3/3 with reach for three mana that provides modified creatures under its owner's control with trample, whenever one of its owner's modified creatures deals combat damage to an opponent, its controller can your library for a basic land card, put it onto the battlefield tapped
You can also keep the menace counter and make blocking even tougher later in the game
(Select from among all legal targets.) Chaos: Whenever you roll Chaos, until your next turn, whenever an instant, sorcery, or ability is put onto the stack, you copy it, if that spell or ability has a single target, reselect its target at random
Further Upgrades If you really want to bling out your Werewolf deck or have these cards laying around, then I'd suggest some of the following generic goodstuff staples: Cavern of Souls, Taiga, all fetchlands that get Forest or Mountain, Strip Mine, Worldly Tutor, Sylvan Tutor, Green Sun's Zenith, Finale of Devastation, and uhhh