Engineered Explosives (Topper) [Ultimate Masters Box Topper] Snake Whenever a creature enters the

Whenever a creature enters the battlefield

where X is the number of Allies you control

Set: Guilds of Ravnica Prerelease Promos Type: Instant Rarity: Rare Cost: {B}{G} Destroy target permanent an opponent controls

Set: Eternal Masters Type: Land Rarity: Rare {T}: Untap target attacking creature

Engineered Explosives (Topper) [Ultimate Masters Box Topper] Snake Whenever a creature enters theSet: Ultimate Masters Box Topper Type: Artifact Rarity: Mythic Cost: {X} Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.) {2}, Sacrifice Engineered Explosives: Destroy each nonland permanent with mana value equal to the number of charge counters on Engineered Explosives.