Bolstered Swarm

Paragon Tier
Prerequisite: 11th level, druid, Primal Swarm class feature, wild shape power
Benefit: When you use wild shape to change from your humanoid form to beast form, you gain 5 + your Constitution modifier temporary hit points. The temporary hit points increase to 10 + your Constitution modifier at 21st level.

Published in Primal Power, page(s) 143.