Shade
Monster Junkie
How about something like this?
Cling (Ex): Once a swarm of scarlet dancers surrounds a creature, they cling to the victim with incorporeal tendrils. The victim is free to move and is not considered grappled, but the scarlet dancer swarm moves with the victim; thus, the victim will begin its next turn with the swarm in its space, and will be vulnerable to the swarm's distraction ability. The victim may escape with a successful DC X Escape Artist check, a freedom of movement effect, or by slaying the swarm.
Cling (Ex): Once a swarm of scarlet dancers surrounds a creature, they cling to the victim with incorporeal tendrils. The victim is free to move and is not considered grappled, but the scarlet dancer swarm moves with the victim; thus, the victim will begin its next turn with the swarm in its space, and will be vulnerable to the swarm's distraction ability. The victim may escape with a successful DC X Escape Artist check, a freedom of movement effect, or by slaying the swarm.