When an attack drains an ability score,
it permanently reduces that score in a
living creature (any creature not of the
construct, deathless, or undead type).
If a creature can drain an ability score,
that creature’s descriptive text describes
how it does so and which ability is
drained, as well as the amount of that drain.
On a critical hit, an attack that causes ability
drain deals twice the indicated amount of
drain—if the drain is expressed as a die
range, roll twice as many dice.
Unless otherwise noted in the creature’s
description, a creature gains 5 temporary
hit points (10 on a critical hit) whenever it
drains an ability score, no matter how many
points it drains. Temporary hit points gained
in this fashion last for up to 1 hour.
Some ability drain attacks allow a Fortitude
save (DC 10 + 1/2 draining creature’s racial HD +
draining creature’s Cha modifier; the exact DC
is given in the creature’s descriptive text).
If no saving throw is mentioned, none is allowed.
A restoration spell can restore drained ability score points.
