Engineered Explosives [Kaladesh Inventions] Monkey Maro-Sorcerer's power and toughness are

Maro-Sorcerer's power and toughness are each equal to the total number of cards in all players' hands

it gets -4/+4 until end of turn

They become 6/6 Elemental creatures

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

Engineered Explosives [Kaladesh Inventions] Monkey Maro-Sorcerer's power and toughness areSet: Kaladesh Inventions 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.