Catalyst Stone [Odyssey] Nixilis Set: Rise of the Duelist

Set: Rise of the Duelist Card type: Pendulum/Effect Monster Rarity: Super Rare Attack: 2000 Defense: 2000 Once per turn

and in the GYs into the Decks

Set: XY: Phantom Forces Type: Psychic Rarity: Rare

Set: Commander 2014 Type: Instant Rarity: Rare Cost: {3}{G} Create a 3/3 green Beast creature token for each creature put into your graveyard from the battlefield this turn

or land card from their hand onto the battlefield

Catalyst Stone [Odyssey] Nixilis Set: Rise of the DuelistSet: Odyssey Type: Artifact Rarity: Rare Cost: {2} Flashback costs you pay cost up to {2} less. Flashback costs your opponents pay cost {2} more. The gems' incandescence invades the dreams of all who see them.