Creating Skeleton Variant HD cost

[Darksyde]

When combining burning and bloody variants I had a couple questions I can't quite track down the answer to.

Would a 5 HD creature be 10, 15, or 20 HD to rais as a bloody + burning skeleton?

Is a bloody + burning skeleton still able to reasemble after 'Firey Death'?

Thanks!

[Mojorat]

I would go with 15 hd but really not sure. The bloody skeletons ability to reconstruct itself is only stoppes by positive energy.

[Are]

I would say 15, as doubling twice is usually reinterpreted as tripling in PF/D&D rules:

PRD wrote:

Multiplying: When you are asked to apply more than one multiplier to a roll, the multipliers are not multiplied by one another. Instead, you combine them into a single multiplier, with each extra multiple adding 1 less than its value to the first multiple. For example, if you are asked to apply a ×2 multiplier twice, the result would be ×3, not ×4.