Betoucher

Legendary Resistances 2/Day: If the Betoucher fails a saving throw, it can choose to succeed instead.

Disruptive Touch. Whenever a creature is touched by the Betoucher, such as when they are hit by one of its attacks, that creature automatically loses concentration on any spell on which they are concentrating. Additionally, all magical effects targeting the creature are dispelled, and all magic items they are carrying or attuned to become non-magical and mundane until the end of their next turn.

Magic Detection: The Betoucher is permanently under the effects of detect magic, and can sense the direction and distance to any creature casting a levelled spell within 500 feet of them. 

Magic Abhorence: The Betoucher will seek out creatures who use, are affected by, or carry, the most magic with them. 

Magic Resistance. The Betoucher has advantage on saving throws against spells and other magical effects, and resistance against all damage caused by spells.

• Note: the Betoucher has resistance to magical piercing slashing and buldgeoning damage, but does not have resistance to non-magical piercing slashing and bludgeoning damage. 

Multiattack. The Betoucher makes four Reaching Touch attacks; no more than 3 against a single target. 

Reaching Touch. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 24 (6d6 + 6) acid damage. Once per turn it may augment one tendril touch attack which hits with a Spell Slot Drain: 

• Spell Slot Drain. Once per turn, when the Betoucher hits a target with a Tendril Touch, it can force the target to lose their highest available spell slot. The target takes 1d4 psychic damage for each level of the spell slot consumed, and the Betoucher regains hit points equal to the psychic damage dealt.
  • For example, if the betoucher uses this feature against a creature with a 5th level spell slot which has not been expended (and no higher unexpended spell slot) that creature will take 5d4 psychic damage,  that spell slot is expended, and they regain an equivalent amount of hit points to the psychic damage dealt. 

Writhing: the betoucher has advantage to save against being grappled and restrained, and opportunity attacks made against it are always made with disadvantage.

Dash: the Betoucher can move its full movement speed as a bonus action. 

Balanced Touch: if the Betoucher has not yet moved on its turn, it can make one reaching touch attack as a bonus action. 

The Betoucher can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time, and only at the end of another creature’s turn. The Betoucher regains spent legendary actions at the start of its turn.

Tendril Strike. The Betoucher makes one Reaching Touch attack.

Multistrike (2 Actions) The Betoucher strikes out at all creatures within reach; making one reaching touch attack against each creature within 10 feet; if there are more than 2 such creatures, each attack is made with disadvantage.

Psychic Call. (3 Actions) All creatures that can see the Betoucher must succeed on a DC 18 Intelligence saving throw or take 33 (6d10) psychic damage and immediately use their reaction to move their full movement speed toward the Betoucher.