Cheapest priced copy (Aether Revolt): $0.35 at Card Kingdom, near mint, their price list as of .
Decommission 
Instant · Common · Aether Revolt · #16
Destroy target artifact or enchantment.
Revolt — If a permanent left the battlefield under your control this turn, you gain 3 life.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Aether Revolt | 16 | Common | $0.35 | $0.49 |
| The List | AER-16 | Common | $0.35 | — |
6 rulings from Wizards of the Coast
- 9 February 2017Tokens that leave the battlefield will satisfy a revolt ability.
- 9 February 2017If Decommission destroys a permanent you control, it will enable its own revolt ability and you'll gain 3 life.
- 9 February 2017Revolt 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.
- 9 February 2017Revolt 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.
- 9 February 2017Energy counters aren't permanents. Paying {E} won't satisfy a revolt ability.
- 9 February 2017If the target artifact or enchantment becomes an illegal target, Decommission doesn't resolve and none of its effects happen. You won't gain life.