Underworld Sentinel 2014
CR 10 undead
Huge undead, neutral
STR23 (+6)
DEX15 (+2)
CON18 (+4)
INT10 (+0)
WIS16 (+3)
CHA14 (+2)
Passage Guardian.
Can make an opportunity attack when a hostile creature moves within its reach as well as when a hostile creature moves out of its reach. It gets one extra reaction that be used only for opportunity attacks.
Turn Immunity.
Is immune to effects that turn undead.
Undead Nature.
Doesn't require air food drink or sleep.
Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details