Engineered Explosives (Topper) [Ultimate Masters Box Topper] noPrice Whenever you cast a Zombie

Whenever you cast a Zombie spell

Set: Beta Edition Type: Creature — Spirit Rarity: Rare Cost: {B}{B} Haste

Set: Zendikar Type: Instant — Trap Rarity: Mythic Cost: {2}{U}{U} If an opponent cast three or more spells this turn

Pay {E}{E}{E}: Electrostatic Pummeler gets +X/+X until end of turn

At the beginning of the upkeep of enchanted artifact's controller

Engineered Explosives (Topper) [Ultimate Masters Box Topper] noPrice Whenever you cast a ZombieSet: 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.