Medium Medium humanoid (any race, Sentinel, Any Non-chaotic
The twilight sentinel's innate spellcasting ability is Charisma (spell save DC 15, +7 to hit with spell attacks). It can cast the following spells innately without expending somatic or material components.
Aura of Protection. The twilight sentinel and friendly creatures within 30 feet of it have advantage on wisdom saving throws Sacred Weapons. The twilight sentinel's weapon attacks are magical. When the twilight sentinel hits with its morningstar, the weapon deals an extra 18 (4d8) radiant damage (included in the attack).
Multiattack. The twilight sentinel makes three attacks with it's morningstar. Morningstar. Melee weapon attack: +8 to hit, reach 5 ft., one target. Hit: 8 (1d8+4) piercing damage plus 18 (4d8) radiant damage. Divine Sense (3/Day). Until the end of the twilight sentinel's next turn, it knows the location of any celestial, fiend, or undead within 60 feet of it that is not behind total cover. It knows the type of the creature but not its identity.