Memory Erosion [Shards of Alara] Revised Edition you can substitute this card

you can substitute this card for a Tribute(s)

during your Standby Phase

Each Mega Pack contains cards from "Maximum Crisis"

Set: Dark Revelation Volume 4 Card type: Effect Monster Rarity: Secret Rare Attack: 0 Defense: 0 This card cannot be destroyed by battle with a Level 7 or lower monster

Memory Erosion [Shards of Alara] Revised Edition you can substitute this cardSet: Shards of Alara Type: Enchantment Rarity: Rare Cost: {1}{U}{U} Whenever an opponent casts a spell, that player mills two cards. "The Filigree Texts do not compel you to act in accordance with their precepts. They only specify the consequences should you fail." Lodus of the Ethersworn