Cheapest priced copy (Odyssey): $5.99 at Card Kingdom, near mint, their price list as of .
Catalyst Stone 
Artifact · Rare · Odyssey · #297
Flashback costs you pay cost {2} less.
Flashback costs your opponents pay cost {2} more.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $5.99 to $27.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Odyssey | 297 | Rare | $5.99 | $27.99 |