Seems the Warhorn #5 fire skill Wildfire is rather picky about what combo finishers it’ll work with.
Non ground-targeted blast finishers like Dragon’s Tooth and PBAoE seem to trigger might stacks just fine, but ground-targeted blast finishers like Phoenix don’t.
Leaps work some of the time but they seem to be picky depending on the angle you enter the field from. Works perfectly from one end of the carpet to the other, but coming in from the sides is a 50/50 chance it’ll trigger.
Projectile Finishers work well enough, but I’ve also noticed multi-projectile attacks like Hurl from Rock Barrier (Which are a 100% chance on each rock thrown, x5 in total.) didn’t trigger even one combo when going through Wildfire.
Whirl finishers work just fine, nothing wrong with them.