I picked up a box of Heroscape minis that had been discounted after the holidays. It's the one that has a pretty decent L green dragon, a couple of demony things, a mech, and a very dramatic looking wyvern skeleton with an undead rider. Its the sort of mini that as a GM you relish putting out on the table, but here's my boggle. The wings still have flesh on them, the pose is dynamic flight-type pose, and if they are unable to fly, Wyverns make horrible mounts. But the Skeleton template clear states that non-magical flyers lose the flight ability, so what I'm wondering is, is there a way in the books to get this undead skeletal wyvern off the ground?
If there isn't, what? Call it a unique creature and give it a +1 CR?
If there isn't, what? Call it a unique creature and give it a +1 CR?