Mauvrion Skies (Blue) [1HP278] [History Pack 1] EX2-064 {T}: Destroy target creature with

{T}: Destroy target creature with a counter on it

how could I know they'd explode

Set: The Lord of the Rings: Tales of Middle-Earth Type: Creature — Wraith Knight Rarity: Uncommon Cost: {2}{B} Deathtouch

Set: March of the Machine Commander Type: Creature — Angel Rarity: Rare Cost: {3}{W} Flash

Set: Innistrad: Crimson Vow Type: Sorcery — Rarity: Common Cost: {1}{R} Exile the top two cards of your library

Mauvrion Skies (Blue) [1HP278] [History Pack 1] EX2-064 {T}: Destroy target creature withSet: History Pack 1 Finish: Regular Type: Action Rarity: Rare Class: Runeblade Cost: 0 The next Runeblade attack action card you play this turn gains go again and "If this hits, create 1 Runechant tokens." (It's an aura with "When you play an attack action card or attack with a weapon, destroy Runechant and deal 1 arcane damage to target opposing hero.") Go again