Brand's R might need nerfing, but the issue comes from the wording.

I saw Meddler post on the issue that Brand's Pyroclasm seems to be applying a buff for the duration of the ability rather than only during the previous bounce, I just wanted to discuss changing the wording itself, as the additional blaze passive buff could be interpreted as once an Ablaze'd target is hit with Pyroclasm the rest of the ultimate's bounces will prioritize champions, or it could be interpreted as only the next bounce will prioritize champions, and that it checks each consecutive hit vs checking only on the first. In my opinion the wording could easily clarify what is intended, whether they nerf the ability or leave it the same, I believe the wording should at least clarify when it checks for an "Ablaze" target.

Meddler's post: http://boards.na.leagueoflegends.com/en/c/gameplay-balance/tVsMLBAg-can-we-lower-the-width-on-brands-w?comment=0001