[Flame Wisp][1] deals damage when you hit with a Strike:

> Three faintly glowing wisps of fire float around your head. Each time you hit a creature with a Strike, one of the wisps goes hurtling towards that creature, dealing 1d4 fire damage.

Is the damage added to the Strike's damage or is it dealt as a separate damage instance?


  [1]: https://2e.aonprd.com/Spells.aspx?ID=912