Minion of Xalthon (5e Creature)
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Minion of Xalthon
medium aberration (great old one), chaotic evil
Saving Throws Con+7, Wis+8, Cha+9
Innate Spellcasting. The minion of Xalthon's innate spellcasting ability is Charisma (spell save DC 17). The minion of Xalthon can innately cast the following spells, requiring no material components:
at will: eldritch blast (the minion of Xalthon is 11th level and has the Agonizing Blast invocation, which is described on page 110 of the Player's Handbook)
Magic Resistance. The minion of Xalthon has advantage on saving throws against spells and other magical effects.
Nightmare Vision. Recharge 6. The minion of Xalthon chooses a creature within 60 feet of it. The target is incapacitated until the start of the minion of Xalthon's next turn, at which time it takes 28 (5d10) psychic damage. Additionally, unless it has been less than a ten-day since the target had this feature used on it (by any creature) the vision, which it can't quite remember but knows was horrible, will come true within a ten-day unless the target dies before then (it is up to the DM how to resolve this, but the Minion of Xalthon is balanced expecting the creature to take about 50 damage when the vision resolves).
Knife. Melee Attack: +5 to hit, reach 10 ft., one target. Hit: 4 (1d4+1) piercing damage plus 4 (1d6) psychic damage.
Insanity Hold. While the minion of Xalthon is grappling a creature, it may use its reaction at the start of that creature's turn to deal 11 (2d10) psychic damage to them and cast confusion on them.
The minion of Xalthon is a smaller and less powerful replica of Xalthon, holding a slightly magical dagger.
The minion of Xalthon will always follow Xalthon's orders. In combat the minion of Xalthon will target its enemies based on their ability to deal damage; it will ignore the enemy it thinks has the lowest wisdom, and it will target the remaining creatures from highest to lowest DPS using its Nightmare Vision when possible and its Eldritch Blast when not. Once the amount of enemies remaining (not counting grappled creatures) is equal to or less than the amount of allies the minion of Xalthon has plus three the minion of Xalthon will attempt to grapple the creature with the second least Wisdom, and once they are grappled it will attempt to stab them. It will never throw its dagger. It will use its reaction for shield against the first possible attack unless it is grappling a creature; it will always use Insanity Hold if possible.