This spell functions as [_appearance of life_](/spells/appearance-of-life) (_Pathfinder RPG Horror Adventures_ 108), except that you can disguise a single undead creature regardless of its number of Hit Dice, and the illusion also creates relevant smells, sounds, textures, and temperatures to match the appearance. If you disguise the target as a living version of itself, creatures that interact with the target take a –5 penalty on their Will saving throws to disbelieve the illusion, though if the target attacks a creature, the attacked creature no longer takes this penalty.