>>49122565Talonflame's HA Gale Wings gave it priority to flying moves so the main strategy with Talonflame was spamming priority Brave Bird. Usually, this severely damaged, or killed anything it targeted before it got a chance to move. Roost being a reliable, flying type healing move was also popular on Talonflame since it also could heal before anything could hurt it. Talonflame was also a competitive breeder's best friend since before it, you couldn't have both Flame Body and Fly on your team w/o taking up 2 party slots. You had to either pick one or the other to max out party slots for eggs even if the best spot to hatch eggs was somewhere else. Talonflame changed this by having both, meaning all you needed to do to be able to breed and hatch pokemon at max efficiency is have a Flame Body Talonflame in your party w/ the move Fly granting you simultaneous fast travel and hatch time reduction. Then it got nerfed to shit in Gen 7 when neither of those strengths meant anything anymore. Gale Wings changed so flying moves only had priority when you were at full health meaning 1 priority Brave Bird max without a healing move like Roost couldn't even use the priority properly because Roost does nothing at full health. HMs being wiped out also made any flame body pokemon a viable option for breeding since you could call Charizard to fast travel regardless of your pokemon's moveset. Plus Gen 7 introduced Accelerock so that fucked it pretty hard too.
