Scour from Existenceremoval$0.18Exiles any permanent at instant speed, filling the same late-game catch-all removal role as Unstable Obelisk. It is a flexible colorless answer that can handle nearly anything once you have enough mana.
Meteor Golemremoval$0.17Doubles as a colorless answer to any nonland permanent while leaving behind a body. It is a common upgrade in decks that want repeatable utility attached to removal.
Lux Cannonremoval$0.30A colorless artifact that can eventually destroy any permanent, serving a similar long-game removal function. It is slower and more board-dependent, but fits the same broad utility slot.
Spine of Ish Sahremoval$0.36Destroys any permanent on entering the battlefield and can be recurred for extra value. It plays the same universal answer role, though at a much higher mana investment.
Nevinyrral's Diskremoval$0.81A classic colorless sweeper that answers problematic artifacts, enchantments, creatures, and planeswalkers. It serves as a broad emergency reset similar to Obelisk’s catch-all utility.
Oblivion Stoneremoval$0.65Provides scalable, colorless permanent removal and can selectively spare your own board. It is one of the closest functional equivalents for decks wanting a versatile artifact-based answer.
All Is Dustremoval$16.45A powerful colorless sweeper that clears most colored permanents, often functioning as a larger-scale version of universal artifact removal. It is stronger in colorless-heavy decks and against multicolor boards.
Karn Liberatedremoval$194.26A colorless planeswalker that can exile any card or restart the game, giving it a similar all-purpose answer profile. It is a much stronger but much more expensive top-end removal option.