My Undead Horde Awakens (Archenemy) [Archenemy Schemes] Aura Lost to time is the

Lost to time is the artificer's art of trapping light from a distant star in a ring of purest gold

Spend this mana only to cast a creature spell of the chosen type

Set: Duel Decks: Elves vs

defending player exiles the top twenty cards of their library

My Undead Horde Awakens (Archenemy) [Archenemy Schemes] Aura Lost to time is theSet: Archenemy Schemes Type: Ongoing Scheme Common Cost: (An ongoing scheme remains face up until it's abandoned.) At the beginning of your end step, you may put target creature card from an opponent's graveyard onto the battlefield under your control. When a creature put onto the battlefield with this scheme dies, abandon this scheme.