Rhystic Study [Commander's Arsenal] Unhinged Promos {1}{G}: Turn Obscuring Aether face

{1}{G}: Turn Obscuring Aether face down

When Helvault is put into a graveyard from the battlefield

Set: Dark Revelation Volume 2 Card type: Effect Monster Rarity: Common Attack: 1800 Defense: 1500 When this card is sent from your hand to the Graveyard by an effect of a card controlled by your opponent

Set: Secret Slayers Card type: Effect Monster Rarity: Super Rare Attack: 500 Defense: 500 You can discard 1 Rock monster

Rhystic Study [Commander's Arsenal] Unhinged Promos {1}{G}: Turn Obscuring Aether faceSet: Commander's Arsenal Type: Enchantment Rarity: Common Cost: {2}{U} Whenever an opponent casts a spell, you may draw a card unless that player pays {1}. Friends teach what you want to know. Enemies teach what you *need* to know.