Cheapest priced copy (Jumpstart): $0.35 at Card Kingdom, near mint, their price list as of .
Flames of the Raze-Boar 
Instant · Uncommon · Ravnica Allegiance · #101
Flames of the Raze-Boar deals 4 damage to target creature an opponent controls. Then Flames of the Raze-Boar deals 2 damage to each other creature that player controls if you control a creature with power 4 or greater.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart | 318 | Uncommon | $0.35 | — |
| Ravnica Allegiance | 101 | Uncommon | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 25 January 2019If the chosen target becomes an illegal target for Flames of the Raze-Boar, the spell doesn’t resolve. No creatures are dealt damage.
- 25 January 2019If the target is dealt lethal damage this way, it will still be on the battlefield while Flames of the Raze-Boar deals damage to other creatures, if appropriate. Creatures dealt lethal damage won’t die until after Flames of the Raze-Boar is entirely finished resolving.