Chances are you’ll either focus purely on one of these or mix and match two of them.
Fire and ice, in other words!
Check out our support gems below for advice on splitting your main Fireball off into several smaller ones.

Frost Wall
Think of Frost Wall as the fence that supports Fireball.
This is a great skill not only for doing damage but for controlling the movements of enemies.
Still, it’s fun to cast Flame Wall atop enemies and then follow up with Fireball.

This gem affects any spell you cast yourself, making its effect reoccur to a staggering degree.
The damage is better than Arcane Tempo, but you’d best monitor your blue mana pool.
This means a spiraling octet of new Fireballs splitting off from your central Fireball.

It’s good stuff when it activates, and offers a truly beautiful pyrotechnic kaleidoscope.
Any negatives are negligible and will cancel each other out.
Magnified does just that, giving our bombs 40% more AoE.
you might place this on Frost Wall or Frost Bomb, whichever you prefer.
Strip Away
Strip Away increases the effect of any exposure.