Soul Shatter

Edict effects have always ceded the same lever to the opponent: they choose what dies, so they hand you the token, the mana dork, the permanent they were relieved to lose. This one inverts that by targeting the top of the curve instead of the bottom, forcing away the highest-mana-value creature or planeswalker each opponent controls. The reframe is complete. Where Diabolic Edict and its kin punish empty boards and get punished by wide ones, this rewards you against exactly the situations edicts historically missed: the ramp deck that just resolved a bomb, the control player leaning on a single planeswalker, the reanimator opponent who cheated in something enormous. It reaches planeswalkers, which most sacrifice effects never touched, and it works at instant speed, so it answers a threat on the turn it lands rather than the turn before. The tradeoff is sharp and deliberate: against a flooded board where every permanent shares the same low value, it removes one expendable body and does nothing about the swarm. This is a scalpel for the expensive, singular threat, not a broom for the cheap and plentiful, and the "greatest mana value" clause is what draws that line cleanly enough that you always know which boards it dismantles and which ones simply shrug it off.