MAGIC: THE GATHERING
Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.)
, Sacrifice Engineered Explosives: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Engineered Explosives.
This uniquely versatile "sweeper" is an excellent card for multi-color control decks as well as artifact themed decks. You'll find "EE" in a host of sideboards as a good catchall answer to whatever unexpected permanent your opponent might play. Recurring Explosives with Academy Ruins is often a lock against decks without much draw power.