i understand how the toxic orb can be useful like for poison heal but what is the flame ball useful for?
Flare Orb inflicts the user with a burn. This can have a strategic use:
These orbs help power up abilities like Guts or Marvel Scale, along with the move Facade.
Ursaring is a good candidate for the Flame Orb because it can have the ability, Guts. Along with the ability to learn TM42: Facade. Breloom is also good for using the Toxic Orb because of it's Poison Heal ability.
You can use moves like fling and switcheroo to burn your opponent with the flame orb.