Stony SilenceutilityBudget$1.36This is the closest noncreature equivalent to Collector Ouphe, shutting off activated abilities of artifacts. It fills the same hate role in decks that want the effect without a body.
Null Rodutility$119.76A near-identical effect that prevents artifact activated abilities from being activated. It is often even more punishing than Collector Ouphe because it has no creature body to remove via combat.
Karn, the Great Creatorutility$13.20Karn hinders artifact mana and ability-based artifact strategies by shutting off opposing artifacts in practice with his static ability. He occupies a similar anti-artifact hate role, though with a broader and different application.
ManglehornutilityBudget$0.88While not as absolute as Collector Ouphe, Manglehorn taxes artifact deployment and can slow down artifact-based combos. It serves a similar anti-artifact tempo role in green decks.
Damping SphereutilityBudget$1.08This is not specific to artifacts, but it is a common hate piece for decks trying to restrict mana engines and combo setups, including artifact-based ones. It performs a similar disruptive utility function from the sideboard.
Energy FluxutilityBudget$0.34A classic artifact hate enchantment that taxes artifact-heavy strategies and can overload artifact decks quickly. It is a broader, more punishing answer than Collector Ouphe in some matchups.
Kataki, War's Wageutility$2.09Kataki pressures artifact decks by taxing their upkeep, functioning as another hatebear against artifact strategies. Like Collector Ouphe, it is most effective against decks leaning on cheap artifacts and mana rocks.
Creeping Corrosionremoval$2.14If you want a one-shot anti-artifact payoff rather than a static hate piece, this is a strong green option. It serves the same anti-artifact role in green, but as a sweeper instead of a lock piece.