Engineered Explosives [Ultimate Masters] Adeptus Astartes Dragons Type: Instant Rarity: Common

Dragons Type: Instant Rarity: Common Cost: {2}{R} Add {R}{R}{R}{R}{R}

Set: Commander 2014 Type: Creature — Elf Warrior Rarity: Rare Cost: {G} Multikicker {1}{G} (You may pay an additional {1}{G} any number of times as you cast this spell

Enchanted creature has "{T}: Create a token that's a copy of this creature

which can be assembled in 2 recommended ways:

Engineered Explosives [Ultimate Masters] Adeptus Astartes Dragons Type: Instant Rarity: CommonSet: Ultimate Masters Type: Artifact Rarity: Rare 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.