Good job I had the curiosity to click on this topic despite initially assuming that the news would have no competitive consequences whatsoever.
As I have said before, Flare Blitz would be an excellent addition for Entei, unlike Flareon, as it has the perfect stat distribution for the move. I can certainly see this pushing Entei up to UU standard finally, but it won't be OU still by a long shot.
I can see two viable sets for UU already that utilize it. One is a mixed wallbreaker set already mentioned, using Flare Blitz / HP Grass or Solarbeam / Stone Edge / Return or Sunny Day. Having a viable move to OHKO Chansey in the sun in particular is a huge benefit. Having another good offensive Moltres check in the metagame would probably come second.
The other is a RestTalk set using Flare Blitz / Roar or Toxic / Rest / Sleep Talk to give Arcanine some competition in this role. A reliable and powerful move like Flare Blitz is great for this kind of set, and Entei's superior overall defenses, attack and speed somewhat make up for the lack of Intimidate. Pressure can actually be a useful ability for such a defensive set.
It all depends on the nature it gets as far as what sets will be most viable.
As I have said before, Flare Blitz would be an excellent addition for Entei, unlike Flareon, as it has the perfect stat distribution for the move. I can certainly see this pushing Entei up to UU standard finally, but it won't be OU still by a long shot.
I can see two viable sets for UU already that utilize it. One is a mixed wallbreaker set already mentioned, using Flare Blitz / HP Grass or Solarbeam / Stone Edge / Return or Sunny Day. Having a viable move to OHKO Chansey in the sun in particular is a huge benefit. Having another good offensive Moltres check in the metagame would probably come second.
The other is a RestTalk set using Flare Blitz / Roar or Toxic / Rest / Sleep Talk to give Arcanine some competition in this role. A reliable and powerful move like Flare Blitz is great for this kind of set, and Entei's superior overall defenses, attack and speed somewhat make up for the lack of Intimidate. Pressure can actually be a useful ability for such a defensive set.
It all depends on the nature it gets as far as what sets will be most viable.