Exile all artifacts, creatures, and lands from the battlefield, all cards from all graveyards, and all cards from all hands.
Cycling 5RR (5RR, Discard this card: Draw a card.)
When you cycle this card, destroy all lands.
Jokulhaupsmass_destruction$4.87A classic red reset spell that destroys all lands, creatures, and artifacts, serving a similar board-wiping purpose. It is less absolute than Decree of Annihilation but plays in the same mass-denial space.
Obliteratemass_destruction$4.72This is one of the closest functional equivalents, wiping creatures, artifacts, and lands while being uncounterable. It shares the same all-in mana-denial game plan, though it does not hit hands or graveyards.
Boom // Bustmass_destruction$1.52Bust is a land reset spell that can function as a sweeping mana denial tool in red decks. It is much cheaper and less comprehensive, but fills a similar role when you want to break parity on lands.
Devastationmass_destruction$17.22A red sorcery that destroys all creatures and lands, creating the same kind of game-ending reset that Decree of Annihilation can enable. It is smaller in scope but very similar in strategy.
Worldfiremass_destruction$28.50A devastating red finisher that exiles all permanents and all cards from hands and graveyards, closely echoing Decree of Annihilation's total-resource denial. It is the most comparable effect in terms of ending the game by emptying everything.
Ruinationmass_destructionBudget$0.74This punishes nonbasic mana bases by destroying all nonbasic lands, making it a major red land-denial tool. It is less universal than Decree of Annihilation but serves a similar strategic function in many Commander games.
Armageddonmass_destruction$31.94A premier land wipe that destroys all lands, often used to lock opponents out of resources the same way Decree's cycling mode can. It is cheaper and far more efficient, but only hits lands.
Wildfiremass_destruction$3.08A red sweeper that destroys lands and creatures while dealing damage, often functioning as a resource reset plus board clear. It is less absolute than Decree of Annihilation but occupies the same destructive control niche.