Mana Vault [Collectors' Edition] H21 ) You can only use

) You can only use this effect of "The Prime Monarch" once per turn

This card can attack the opponent directly

Set: World Championship Decks 2003 Type: Creature — Elemental Beast Rarity: Common Cost: {1}{U} Discard a card: Switch Aquamoeba's power and toughness until end of turn

Special Summon 1 "Cyberdark Dragon" from your Fusion Deck

You can only use this effect once per turn during your Main

Mana Vault [Collectors' Edition] H21 ) You can only useSet: Collectors' Edition Type: Artifact Rarity: Rare 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}.