I was wondering, does the invocation Dark Discorporation change your type and template to Swarm? There is information on Bat Swarms on the SRD, but I don't know how far that has been adopted. All the invocation description talks about is an increase in dexterity (and the Charisma based AC bonus).
Let's for example say that I have Cleric levels and the Heartwarder template. My type is changed to Fey, and I have a constitution score of 8. Is the Bat swarm going to be Fey, have low hitpoints and HD?