Stone of Erech

Recursion decks live and die on the death trigger, and this shuts the whole loop off at its source. The static ability replaces every opponent's creature death with an exile, which means no bodies to reanimate, no dies-triggers to bank, no fodder returning from the yard for a second and third run. A single one-mana artifact does the work that used to require a stapled-on Rest in Peace effect, and it does it passively, without touching your own graveyard interactions. The design tension is in the cost of that asymmetry: the static effect only hits opponents, so a dedicated graveyard-hate piece would normally wall off both sides. Here you keep your own recursion open while closing theirs, a sharper knife than the symmetric hate that came before it. The sacrifice ability is the escape hatch and the payoff rolled together: when a single opponent's graveyard is the real threat (a reanimator on the brink, a delve pile stacking up), you spend the artifact to exile that yard wholesale and replace the card, so the answer never costs you a card in hand. That two-mode structure (grind them out passively, then cash the Stone in for a targeted strike plus a draw) gives it a second life the fire-and-forget graveyard nukes never had: those leave you holding a dead artifact once the yards are empty, while this one always converts itself back into a card.