Wish mummification had more clarification to it. After the 4 turns, does the mummified character die? Or if the character has been healed, will it only lose the 25% hp given to it? If its the latter, definitely game changing
Upon resurrection, you will give HP to the character equal to a percentage of the current Xelor's HP (the percentage increases with the level of the spell). For the next 4 turns, the character will loose 25% of the HP that was initially given to him.
After these 4 turns, the characters stays alive and no longer looses HP.