You gotta not using Arcanine without Flare Blitz. Or else, try a defensive set with Will-O-Wisp, Sunny Day, Morning Sun and whatever you like, 99% of the time it should be Flare Blitz tho. Morning Sun recovers the damage which Sunny Day powers up. Surprisingly, this Arcanine is great against less offensive Water-type Pokemon and about any Physically-offensive Pokemon in UU. If it's for the game's story, don't use Arcanine. Waste of Fire Stone.