
So this seems like it could be really, REALLY useful in the new hangarback walker/arcbound ravager decks. Since their is not negative casting costs in magic (as far as I know), this card could lead to infinite loops with memnites, lotus petals, mox opals, etc etc. I might be wrong on that, not sure, but either way, anytime you sac anything you should be able to get hangarback walkers back on hand. Seems some good.