Cheapest priced copy (Guilds of Ravnica): $2.29 at Card Kingdom, near mint, their price list as of .
Chance for Glory 
Instant · Mythic · Guilds of Ravnica · #159
Creatures you control gain indestructible. Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $2.29 to $19.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Guilds of Ravnica | 159 | Mythic | $2.29 | $17.99 |
| Secret Lair Drop | 2470 | Mythic | $7.99 | $19.99 |
3 rulings from Wizards of the Coast
- 5 October 2018Creatures you control gain indestructible indefinitely. If you find a way to not lose the game during your next turn, they’ll continue to be indestructible for as long as they remain on the battlefield.
- 5 October 2018If you somehow skip the extra turn Chance for Glory gives you or skip that turn’s end step, the delayed triggered ability never triggers.
- 5 October 2018Chance for Glory’s first effect affects only creatures you control at the time it resolves. Creatures you begin to control later in the game won’t gain indestructible.