Jack Simth
First Post
In the case of a level that's specifically lost, this is actually explicitly defined in RAW:Correct. The simulacrum HAS xp because RAW states you must have xp within a given range to be an #th level whatever ... making the question whether your gm defaults to the bottom, median, or top of the range (and thus setting the available xp pool).
Of course, even if the simulacrum is NOT allowed to regain expended experience, the process could continue once the bottom of its existing xp range is reached simply by finding some means of receiving a negative level ... thereby dropping you into the next range's default point.
(emphasis added)SRD said:Level Loss
A character who loses a level instantly loses one Hit Die. The character’s base attack bonus, base saving throw bonuses, and special class abilities are now reduced to the new, lower level. Likewise, the character loses any ability score gain, skill ranks, and any feat associated with the level (if applicable). If the exact ability score or skill ranks increased from a level now lost is unknown (or the player has forgotten), lose 1 point from the highest ability score or ranks from the highest-ranked skills. If a familiar or companion creature has abilities tied to a character who has lost a level, the creature’s abilities are adjusted to fit the character’s new level.
The victim’s experience point total is immediately set to the midpoint of the previous level.
This actually permits some funky shenanigans, normally. If you're, say, an Evil Cleric-16 with a Commanded Wight, you can:
Have your wight hit you.
Voluntarily fail the save to prevent the negative level from becoming permanent 24 hours later.
Spend some of that 7,500 xp you just unlocked.
Cast Greater Restoration (paying the XP with your unlocked XP pool) before your 15 day time limit expires to get rid of the negative level.
This leaves you at exactly the XP needed to be 16th, again....