Catalyst Stone [Odyssey] Dragon Avatar Set: Unlimited Edition Type: Artifact

Set: Unlimited Edition Type: Artifact Rarity: Uncommon Cost: {1} As Black Vise enters the battlefield

Set: Eventide Type: Legendary Creature — Elemental Shaman Rarity: Rare Cost: {2}{B}{B} Whenever Ashling

{T}: Prevent all combat damage that would be dealt by target creature this turn

Set: Aether Revolt Type: Artifact Creature — Construct Rarity: Rare Cost: {X}{X} Walking Ballista enters the battlefield with X +1/+1 counters on it

Catalyst Stone [Odyssey] Dragon Avatar Set: Unlimited Edition Type: ArtifactSet: 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.