Mana Vault (Rainbow Foil) [Secret Lair Drop Series] RT3 also all Synchro Monsters you

also all Synchro Monsters you control will gain 800 ATK this turn

if your "Horus" monster battles an opponent's monster: You can send that opponent's monster to the GY

Set: EX: Sandstorm Type: Psychic Rarity: Rare Retreat cost: Colorless

You can only use each of the following effects of "Gaia the Magical Knight of Dragons" once per turn

Set: Neo Destiny 1st Edition Type: Fire Rarity: Secret Rare Retreat cost: Colorless

Mana Vault (Rainbow Foil) [Secret Lair Drop Series] RT3 also all Synchro Monsters youSet: Secret Lair Drop Series 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}.