Artifact, X
Rare
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 converted mana cost equal to the number of charge counters on Engineered Explosives.
Illus. Ron Spears

12/1/2004: If Engineered Explosives had no charge counters on it when you sacrificed it, it won't destroy an animated land, because that permanent is a land in addition to being a creature.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern