Dark Gyarados (8/82) (Prerelease Promo) [Team Rocket Unlimited] Goblin Mime Set: Dark Ascension Promos Type:

Set: Dark Ascension Promos Type: Sorcery Rarity: Rare Cost: {3}{B}{B}{B} Return all Zombie creature cards from your graveyard to the battlefield tapped

the player can activate mana abilities only if they're from lands that player controls and only if mana they produce is spent to activate other mana abilities of lands the player controls and/or to play that card

sacrifice Helm of Obedience and put one of them onto the battlefield under your control

but how could that be

Whenever Phage deals combat damage to a creature

Dark Gyarados (8/82) (Prerelease Promo) [Team Rocket Unlimited] Goblin Mime Set: Dark Ascension Promos Type:Set: Team Rocket Unlimited Type: Water Rarity: Promo Retreat cost: Colorless,Colorless