Catalyst Stone [Odyssey] Betrayers of Kamigawa Set: Grand Prix Promos Type:

Set: Grand Prix Promos Type: Tribal Sorcery — Eldrazi Rarity: Rare Cost: {7} Each player sacrifices all permanents they control that are one or more colors

A small tear in the fabric of the continuum

destroy all creatures with power 3 or greater

Set: Duskmourn: House of Horror Commander Type: Creature — Archon Rarity: Mythic Cost: {6}{B}{B} Flying

Thus the volume you hold was written

Catalyst Stone [Odyssey] Betrayers of Kamigawa Set: Grand Prix Promos Type:Set: 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.