インスタント
アーティファクト1つかエンチャント1つを対象とし、それを破壊する。
紛争 ― このターンにあなたがコントロールするパーマネントが戦場を離れていたなら、あなたは3点のライフを得る。
Tokens that leave the battlefield will satisfy a revolt ability.
If Decommission destroys a permanent you control, it will enable its own revolt ability and you'll gain 3 life.
Revolt abilities check only whether a permanent you controlled left the battlefield this turn or not. They don't apply multiple times if more than one permanent you controlled left the battlefield. They don't check whether the permanent that left the battlefield is still in the zone it moved to.
Revolt abilities don't care why the permanent left the battlefield, who caused it to move, or where it moved to. They're equally satisfied by an artifact you sacrificed to pay a cost, a creature you controlled that was destroyed by Murder, or an enchantment you returned to your hand with Leave in the Dust.
Energy counters aren't permanents. Paying
won't satisfy a revolt ability.
If the target artifact or enchantment becomes an illegal target, Decommission doesn't resolve and none of its effects happen. You won't gain life.