I got to use this on the guinea pigs, er, players in a recent playtest:
Spiders!Level 1
Range 120'
Duration 1d6 rounds
This power allows the Mentalist to cause up to four victims to hallucinate that they are covered in fearsome, biting insects, which will typically cause them to drop whatever they are holding, flail their arms around, and shriek in terror for the duration.
"Ahhh! Get 'em offa me!"