Ancient Mimic

Vile Saliva. As an action this mimic can spit five blobs of acid where it chooses within 75 ft, all creatures withing 5 ft of the acid ball must make a DC 15 Dex save or take 5d10 acid damage.

Eldritch Tendrils. As an action this mimic can use seven of its large tendrils to strike at any creature within 100 ft of it, the creature must succeed on a DC 15 Con and Str save, on a successful save they take half damage(Con) and don't get thrown(Str) on a failed save they take full damage(Con) or thrown 75 ft(Str)

Eldritch Screech. As an action this creature can let out a mind crushing screech, all creatures excluding other mimics must succeed on a DC 15 Cha and Wis save or become afraid of the creature (Cha) or take 5d6 psychic damage(Wis)

Acidic Flesh. When this creature is attacked by a melee attack it can splash acid on to the attacker dealing 2d8 acid damage.