The Doctor's Tomb

Planechase trades in blunt, table-wide rewrites of the rules, and this one picks the most permanent lever available: death itself. While the plane is active, creatures that would die are exiled instead, and their controllers bleed for it, which quietly turns every board wipe, every chump block, every trade into a life-loss engine that no amount of recursion can claw back. The effect is narrow but surgical: discarded and milled cards still fill the graveyard, and noncreature permanents still die normally, but reanimation loses its most valuable targets and the drain accumulates on whoever is doing the most dying. Then the planar die introduces its release valve, and a strange one: chaos collects every affected player's life total, then hands each of them one back, redistributing the pool so the leader can be dragged down to the same razor's edge as everyone else. That second ability commits to something Planechase rarely attempts. Most planes punish or reward in place; this one reshuffles the entire life-total landscape at the whim of the die, so a player who has carefully banked their total against the exile-drain can watch it evaporate into an equalized scramble.