[Exxy]

Depends on if they serve a function other than just existing.

If no, give them all the same Visual FX.

If yes, there needs to be some distinction between the caster and spawns.

Edit: Also depends on the description/intended use of the skill. . . which I can't see due to my main character being Destiny'd and no one cared enough to inform me when I asked about the skill so this post could be irrelevant to some extent.