Cheapest priced copy (Aether Revolt): $0.49 at Card Kingdom, near mint, their price list as of .
Tezzeret's Betrayal 
Sorcery · Rare · Aether Revolt · #191
Destroy target creature. You may search your library and/or graveyard for a card named Tezzeret, Master of Metal, reveal it, and put it into your hand. If you search your library this way, shuffle.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Aether Revolt | 191 | Rare | $0.49 | — |
| The List | AER-191 | Rare | $0.49 | — |
One ruling from Wizards of the Coast
- 9 February 2017If the target creature becomes an illegal target for Tezzeret’s Betrayal, the spell won’t resolve and none of its effects will happen. You won’t search for Tezzeret, Master of Metal.