Mnemonic Betrayal [Guilds of Ravnica] Aura The goblins did not understand

The goblins did not understand their attraction to the mana rig

put a charge counter on Door of Destinies

"Serra's light isn't easily extinguished

Set: Onslaught Type: Legendary Creature — Dragon Rarity: Rare Cost: {3}{R}{R}{R} Flying

When enchanted creature dies

Mnemonic Betrayal [Guilds of Ravnica] Aura The goblins did not understandSet: 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.