Boraster

Grasping Tendrils. The Boraster can have up to eight tendrils at a time. Each tendril can be attacked (AC 20; 10 hit points; immunity to poison and psychic damage). Destroying a tendril deals no damage to the Boraster, which can extrude a replacement tendril on its next turn. A tendril can also be broken if a creature takes an action and succeeds on a DC 15 Strength check against it.

Spider Climb. The Boraster can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Hydrophobic. The Boraster takes 2d12 acid damage at the start of its turn if it is in water. For every 5 feet the Boraster moves in water, or for every gallon of water splashed on it, it takes 1d12 acid damage.

Eyestalks.The Boraster has up to four eye tendrils at a time. Each tendril can be attacked (AC 10; 5 hit points; immunity to poison and psychic damage). Destroying a eyestalk deals no damage to the Boraster, which can extrude a replacement tendril on its next turn. If all of its eyestalks are destroyed, the Boraster is blinded.

Sharing Is Caring. If an engulfed creature has spells, the Boraster can cast them, (using the targets spell slots and applicable bonuses), without having to use components.

Multiattack. The Boraster makes one bite attack against a restrained creature, four attacks with its tendrils, and uses Reel.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 17 (4d6) piercing damage, and must make a DC 14 Constitution saving throw or be poisoned. If the save is failed by 5 or more, the target contracts Sight Rot. If the target is Medium or smaller, it must succeed on a DC 14 Strength saving throw or be knocked prone. If the target is killed by this damage, it is absorbed into the Boraster.

Tendril. Melee Weapon Attack: +7 to hit, reach 50 ft., one creature. Hit: 4 (1d8) bludgeoning damage and the target is grappled (escape DC 15). Until the grapple ends, the target takes 4 (1d8) bludgeoning damage at the end of their turn and is restrained and has disadvantage on Strength checks and Strength saving throws, and the Boraster can't use the same tendril on another target.

Reel. The Boraster pulls each creature grappled by it up to 25 feet straight toward it.

Engulf. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature.The Boraster attempts to consume a restrained creature, the creature must make a DC 15 Strength saving throw.

On a failed save, the creature takes 10 (3d6) acid damage and is engulfed. The engulfed creature can't breathe, is blinded, deafened and incapacitated.

For each turn that the creature is engulfed, the target takes 10(3d6) acid damage, with the Boraster healing that much. If the target would be killed by this damage, it is reduced to 0 hit points and rendered unconscious, but does not need to make death saving throws.

An ally can attempt to free an engulfed creature by taking an action to make a DC 20 Strength check. On a success, the creature is pulled free and enters a space of its choice within 5 feet of the Boraster.

The Boraster can only have three smaller creatures, two medium creatures, or one large creature engulfed at a time.