Engineered Explosives [Fifth Dawn] SM241 As Steam Vents enters the

As Steam Vents enters the battlefield

If this card is destroyed in the Spell & Trap Zone: You can Special Summon 1 "Ancient Gear" monster from your hand or Graveyard

then put up to seven permanent cards from your hand onto the battlefield

and ponderings

inflict 600 points of damage to your opponent's Life Points for each monster on your opponent's side of the field

Engineered Explosives [Fifth Dawn] SM241 As Steam Vents enters theSet: Fifth Dawn 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.