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Decommission | Instant | | Destroy target artifact or enchantment.
Revolt — If a permanent you controlled left the battlefield this turn, you gain 3 life. | Josh Hass
Disallow | Instant | | Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.) | Min Yum
Metallic Rebuke | Instant | | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Counter target spell unless its controller pays {3}. | Eric Deschamps
Whir of Invention | Instant | | Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle. | Christine Choi
Cruel Finality | Instant | | Target creature gets -2/-2 until end of turn. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) | Svetlin Velinov
Renegade's Getaway | Instant | | Target permanent gains indestructible until end of turn. Create a 1/1 colorless Servo artifact creature token. (Effects that say "destroy" don't destroy a permanent with indestructible, and if it's a creature, it can't be destroyed by damage.) | Ryan Yee
Hungry Flames | Instant | | Hungry Flames deals 3 damage to target creature and 2 damage to target player or planeswalker. | Izzy
