Mnemonic Betrayal [Guilds of Ravnica] The Dark Set: Urza's Saga Type: Legendary

Set: Urza's Saga Type: Legendary Land Rarity: Rare {T}: Add {G} for each creature you control

you may have Valakut

Set: Rise of the Eldrazi Type: Sorcery Rarity: Rare Cost: {3}{R}{R} After the first postcombat main phase this turn

Sacrifice Wasteland: Destroy target nonbasic land

Set: Alpha Edition Type: Instant Rarity: Common Cost: {X}{B} Target creature gets +X/+0 until end of turn

Mnemonic Betrayal [Guilds of Ravnica] The Dark Set: Urza's Saga Type: LegendarySet: Guilds of Ravnica Type: Sorcery Rarity: Mythic Cost: {1}{U}{B} Exile all opponents' graveyards. You may cast spells from among those cards this turn, and you may spend mana as though it were mana of any type to cast those spells. At the beginning of the next end step, if any of those cards remain exiled, return them to their owners' graveyards. Exile Mnemonic Betrayal.