Astralite

Eyes of the Universe. The astralite has advantage on Wisdom (Insight) checks to discover if a creature is lying. Other creatures also have disadvantage on Charisma (Deception) checks to lie to the astralite.

Strange Mind. The astralite has advantage on saving throws against being charmed or frightened. The astralite also can't be put to sleep unwillingly by magic.

Multiattack. The astralite makes one mace attack and uses its Weird Insight.

Mace. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 3 (1d6) bludgeoning damage.

Weird Insight. The astralite targets one creature it can see within 30 feet of it. The target must contest its Charisma (Deception) check against the astralite’s Wisdom (Insight) check. If the astralite wins, it magically learns one fact or secret about the target. The target automatically wins if it is immune to being charmed.