Underworld Sentinel
A reanimator engine that hides its payoff inside its combat step. Most graveyard recursion pays out on cast or on entry; this one splits the transaction across two triggers separated by time and risk. Every attack quietly banks a creature card out of your graveyard, exiling it (which conveniently protects those cards from graveyard hate), and the whole hoard only crashes back onto the battlefield when the Sentinel dies. That structure inverts the usual reanimation math: instead of paying mana to bring back one thing, you invest attacks to stockpile many, then need a death to cash out. Payoff and vulnerability share the same event, which is what makes the card so uneasy to pilot. You want it to die, but only after several swings, and only when there are enough exiled cards to make the return devastating. A 4/5 body is durable enough to connect a few times but soft enough that the opponent can often oblige your death-trigger on their own terms, not yours. The card also rewards deliberate sequencing with a sacrifice outlet: rather than waiting for combat to kill it, you fix the timing yourself and dump the exiled pile the moment the count is worth it. It is a slow-motion payoff dressed as an attacker, and the whole design lives in that delay between the exile and the return.
