Mnemonic Betrayal [Guilds of Ravnica] Saga "The gods used their feathers

"The gods used their feathers to paint all the colors of the world

They likely refer not to one mage

Set: Ninth Edition Type: Artifact Rarity: Rare Cost: {5} Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it

Set: Unhinged Type: Legendary Artifact Rarity: Rare Cost: {1000000} You choose all targets for all spells and abilities

Mnemonic Betrayal [Guilds of Ravnica] Saga "The gods used their feathersSet: 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.