Sphere of Resistance [Kaladesh Inventions] Crucible of War Designed to support sealed deck

Designed to support sealed deck and booster draft

Set: Portal Three Kingdoms Type: Instant Rarity: Uncommon Cost: {1}{G} Cast this spell only during the declare attackers step and only if you've been attacked this step

or Mountain card

Invoke Ouvia and transform ash to ashwings

Ridiculous

Sphere of Resistance [Kaladesh Inventions] Crucible of War Designed to support sealed deckSet: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {2} Spells cost {1} more to cast. "At the outset, we weren't aware of Chief Baral's motives for the project. It's now apparent that he intends to use the device to hamper the 'mages' among the ranks of the renegades." Consulate engineer's log