Mnemonic Betrayal [Guilds of Ravnica] Rivals of Ixalan Prerelease Promos Set: Time Spiral Type: Creature

Set: Time Spiral Type: Creature — Spirit Rarity: Rare Cost: {B}{B} Haste

Activate only during your upkeep

Creatures those players control that can block additional creatures may likewise be put into additional piles

When the mighty sleep

target creature phases out until Oubliette leaves the battlefield

Mnemonic Betrayal [Guilds of Ravnica] Rivals of Ixalan Prerelease Promos Set: Time Spiral Type: CreatureSet: 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.