Käsegott's Neon Hit Points
(Divination, Wild Magic)

Range:  0
Components:  V, S, M
Duration:  1 round per 2 levels
Casting Time:  2
Area of Effect:  60-foot radius circle
Saving Throw:  None

This spell affects a number of creatures within the area of effect equal to half the casters level, rounded up. The creatures affected are randomly determined from all creatures in the area of effect, excluding the caster. Note that the spell does not discriminate between the caster's friends and foes.
The spell causes the targets' hit points to flash in a bright neon colour above the targets' head. This number will appear in the native language of the caster; anyone who can read this language can read the hit point number as well.
Creatures who are held, petrified, asleep, unconscious, or otherwise inactive are not included in the random determination. Creatures who are invisible, hiding in shadows, or otherwise unknown to the caster, are likewise not included. A creature under the effects of an illusion which the caster has not disbelieved will have the illusory hit points flash, rather than their actual hit point values.
The above restrictions only apply to the initial random determination of targets. If a creature affected by the spell becomes unconscious, petrified, invisible, etc., the hit points continue to flash over their head. If one of the targets was under the effects of an illusion and the caster subsequently disbelieves it (or its duration expires), the neon hit points will update to show the new perceived value.
Note that while the concept of hit points is one of game mechanics, and in actuality has no meaning the player characters observing this spell's effects, the number shown can be interpreted by the characters as a relative measure of strength and health of the creatures affected.
The material component of this spell is a small piece of coloured glass.

