Spring Cleaning [Lorwyn] Demon Minion Those creatures don't untap during

Those creatures don't untap during their controllers' next untap steps

it deals X damage to target creature

Set: Guildpact Promos Type: Creature — Djinn Rarity: Rare Cost: {5}{U/R}{U/R} ({U/R} can be paid with either {U} or {R}

the trick is knowing how long you can afford to keep it in your service

Set: Mirrodin Besieged Type: Artifact Creature — Construct Rarity: Common Cost: {4} {W}: Bladed Sentinel gains vigilance until end of turn

Spring Cleaning [Lorwyn] Demon Minion Those creatures don't untap duringSet: Lorwyn Type: Instant Rarity: Common Cost: {1}{G} Destroy target enchantment. Clash with an opponent. If you win, destroy all enchantments your opponents control. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.)