Mana Vault [Kaladesh Inventions] SM65 If a monster is Special

If a monster is Special Summoned from your opponent's Extra Deck

When Special Summoned this way

Set: The Shining Darkness Card type: Effect Monster Rarity: Common Attack: 500 Defense: 1500 FLIP: Take control of 1 LIGHT monster on your opponent's side of the field for as long as this card remains face-up on the field

Anything was possible now

you can discard this card instead

Mana Vault [Kaladesh Inventions] SM65 If a monster is SpecialSet: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {1} Mana Vault doesn't untap during your untap step. At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault. At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you. {T}: Add {C}{C}{C}.