Mnemonic Betrayal [Guilds of Ravnica] Planechase Creatures of the chosen color

Creatures of the chosen color without flying can't attack you

Set: Ravnica: City of Guilds Type: Artifact Rarity: Rare Cost: {3} Whenever a nonartifact permanent enters the battlefield under your control

Target creature defending player controls can block any number of creatures this turn

Set: Gateway 2007 Type: Creature — Elf Druid Rarity: Rare Cost: {G} {T}: Add {G}

Mnemonic Betrayal [Guilds of Ravnica] Planechase Creatures of the chosen colorSet: 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.