Ok so I have {Warstorm Surge} in play and then drop {Flamekin Brawler}. Can i activate {Flamekin Brawler}'s ability in response to the {Warstorm Surge} trigger?
You sure can! Warstorm uses the stack, so you certainly may respond with instant speed effects, including firebreathing, to increase the creature's power!
Awesome thank you.
That's very clever.