Corpse Churn

Most self-mill effects ask you to choose between fueling the yard and finding what you need. This one refuses the trade-off, doing both in the same instant: three cards off the top of your library, then a creature plucked back out of the resulting pile if there is one to take. The mill is not collateral here, it is the setup, because the cards it bins are candidates for the recursion that follows. The structural cleverness is the ordering. You mill first, then choose, so a creature that lands in the graveyard off the top becomes eligible to return that same resolution. The catch, and the honest one, is that the return is conditional: no creature in the graveyard after the mill means no body comes back, and you are left with a two-mana graveyard contribution and nothing else. That risk is the price of the flexibility. A reanimation deck gets bait for its later sorceries; a delve or graveyard-payoff shell gets bulk; a creature-recursion deck gets to dig and rebuy in one card, when the pile cooperates. The instant timing is what separates it from the field of sorcery-speed dig-and-recur effects. It can sit on held mana at the end of an opponent's turn, or fire in response to graveyard hate to rescue a creature already sitting in the bin before it gets exiled. A modest rate for a small dig, but the spell is angling at three jobs at once, and the decks that want all three rarely see them bundled this cheap.