Mnemonic Betrayal [Guilds of Ravnica] New Phyrexia Prerelease Promos some wizards are finding that

some wizards are finding that they have a little too much spell left at the end of their mana

−8: You get an emblem with "Whenever a creature enters the battlefield under your control

Set: From the Vault: Dragons Type: Artifact Creature — Dragon Rarity: Rare Cost: {16} Domain — This spell costs {2} less to cast for each basic land type among lands you control

What paradox were you expecting

another target creature you control gains haste and gets +X/+X until end of turn

Mnemonic Betrayal [Guilds of Ravnica] New Phyrexia Prerelease Promos some wizards are finding thatSet: 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.