I do have to agree with the OP that palemasters in form take way too much light damage. I can think of two examples where we had a PM in the group that was one-shotted by sunburst doing 700 points of damage. Once was when Horoth bugged out in ToD and started attacking the group before the dialogue was over; he cast sunburst on us, everyone else was fine, the PM keeled over immediately. The second time was in epic Snitch; one of the mephits cast sunburst as soon as it spawned, everyone else was fine, the PM keeled over. IMO, it's a little over the top. I can understand vampire form taking a ton of extra light damage (since they are, of course, creatures of the night), but the rest just seems a bit much.