The best replacement for flash fire is intimidate.

The best alternatives to flash fire are rated as following:
★★★★★  intimidate
★★★★  flame body
★★★★  flame body chandelure
★★★  early bird
★★  infiltrator chandelure
★  drought
★  ghost bomb
★  roll the bones

Your alternative for flash fire is not listed? Suggest!
Speaking about flash fire, one probably shouldn't forget about flame orb.

Other search terms related to flash fire and their ratings are:
★★★★★ flame orb
You have in mind a companion for flash fire and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of flash fire in all years. Click on graph for more.
flash fire
intimidate
flame body