Cheapest priced copy (Eldritch Moon): $0.35 at Card Kingdom, near mint, their price list as of .
Incendiary Flow 
Sorcery · Uncommon · Eldritch Moon · #133
Incendiary Flow deals 3 damage to any target. If a creature dealt damage this way would die this turn, exile it instead.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eldritch Moon | 133 | Uncommon | $0.35 | $0.49 |
| Friday Night Magic 2017 | 3 | Rare | — | $0.49 |
One ruling from Wizards of the Coast
- 13 July 2016The damaged creature will be exiled if it would die for any reason that turn, not just if it dies due to damage from Incendiary Flow.