Advantage on saves vs. spells and magical effects.
At the beginning of each round, and before any PC actions, the Vanguard takes a lair action to cause one of the following effects; the Vanguard can’t use the same effect two rounds in a row:
- [ ] Thrall Puppetry. If any enslaved creatures are within 60 ft., the Vanguard can force one to take its reaction to make a melee attack or grapple attempt immediately. If no thralls remain, psychic echoes of their minds cause a disembodied shriek; each PC must succeed on a DC 13 Wisdom save or have disadvantage on their next saving throw.
- [ ] Whispering Chorus. The lair fills with maddening whispers. Until the next round, all creatures that attempt to cast a spell within the lair must succeed on a DC 13 Intelligence saving throw or the spell fails (the slot isn’t lost).
- [ ] Psionic Distortion Field. The air ripples with warping thought. Until the Vanguard takes its next lair action, ranged attacks and spell attacks suffer disadvantage if they originate within 30 ft. of the Vanguard.
- •Tentacles.
Moves up to 30 ft and attacks for 2d8+4 damage. Target is grappled, and dazed. Escape DC 13. dazed condition ends when target escapes grapple.
- •Psychic Crush.
The Vanguard attacks 1 target within 60 ft. for 6d6+5 psychic damage.
- •Mind Blast.
(1 use, recharges on Bloodied) 60 ft cone. Int Save DC 13. 5d8+3 Psychic damage and target is dazed. Half damage and no dazed if save successful.
- •Enslave.
(1 use).The Vanguard targets one creature within 30 feet. If it fails a DC13 Wisdom Save, it is charmed and under the Vanguard's control until the Vanguard dies or is no longer on the same plane of existence. The target may repeat the saving throw each time they take damage.
At 87HP, the Vanguard recharges its Mind Blast ability. Its Psychic Crush attack now does 6d8 damage.
At 0HP the Vanguard is dying. If it takes 60HP more damage it dies. It immediately uses the Plane Shift Spell on its next action.