LogFAQs > #970556255

Dikitain posted...

Pretty much every spell unless it specifically says you can exclude allies also targets your allies if they are in range.

This. D&D is not kind when it comes to magical AoE friendly fire.

Any spell that says "every creature" or something similar targets every creature, friend or foe. If you only want to hit enemies, stick to spells that say "target creature" or "all enemies in X range" or something along those lines.

That being said, a very kind DM could rule that you don't hit allies. But it's definitely counter to the spirit of the rules, and there are actually builds that revolve around deliberately targeting your allies, or at least mitigating the damage you do when they get caught in the crossfire.

Basically, be really, really careful where you're flinging those Fireballs.