Flames of the Raze-Boar — ruling 1

If 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.

Flames of the Raze-Boar — ruling 2

If the chosen target becomes an illegal target for Flames of the Raze-Boar, the spell doesn’t resolve. No creatures are dealt damage.

Flames of the Raze-Boar : règles, fonctionnement et interactions (MTG)

Flames of the Raze-Boar is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

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.

How it works : Flames of the Raze-Boar

Original English text — Wizards of the Coast / Scryfall

#1January 25, 2019· Wizards of the Coast
If 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.
No other card is named in this ruling.
#2January 25, 2019· Wizards of the Coast
If the chosen target becomes an illegal target for Flames of the Raze-Boar, the spell doesn’t resolve. No creatures are dealt damage.
No other card is named in this ruling.