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Decommission 

Instant
Aether Revolt Common
Destroy target artifact or enchantment.
Revolt — If a permanent you controlled left the battlefield this turn, you gain 3 life.
Revolt — If a permanent you controlled left the battlefield this turn, you gain 3 life.
"A key weakness in the design is its vulnerability to repeated, forceful blows."
#16 — Illus. Josh Hass