Beastmaster

Regeneration. The beastmaster regains 20 hit points at the start of its turn if it has at least 1 hit point and is in dim light or darkness. If the beastmaster takes radiant damage or damage from holy water, this trait doesn't function at the start of the beastmaster's next turn.

Shadow Teleport. When the beastmaster is in dim light or darkness it can take a bonus action to disseminate into a cloud of shadow and teleport up to 60 feet to an unoccupied space it can see that is also in dim light or darkness, reforming there.

Snuff. The beastmaster can choose to extinguish any fire it can see within 60 feet of it, instantaneously snuffing it out. Magical light created by a spell of 4th level or lower can also be targeted, and the spellcaster must make a DC 18 spell save or the light is extinguished. Any other effects the spell may have remain.

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

Sunlight Hypersensitivity. The beastmaster takes 20 radiant damage when it starts its turn in bright light. While in bright light, it has disadvantage on attack rolls and ability checks.

Multiattack. The beastmaster makes two necrotic touch attacks, each of which it can replace with immobilize.

Necrotic Touch. Melee Weapon Attack: +9 to hit, reach 5 ft., one creature. Hit: 8 (1d8 + 4) necrotic damage.

Absorb Life (Recharge 4-6). The beastmaster targets one creature it can see within 60 feet of it. The creature must succeed on a DC 18 Constitution saving throw or take 14 (4d6) necrotic damage. The target's hit point maximum is reduced by an this amount, and the beastmaster regains hit points equal to that amount. The reduction lasts until the target finishes a long rest. If this effect reduces the target to 0 hit points, the target dies and the beastmaster gains temporary hit points equal to their level plus twice their constitution modifier. 

Immobilize. The beastmaster targets one creature it can see within 60 feet of it. The target must succeed on a DC 18 Strength or Dexterity saving throw or become paralyzed until the end of the beastmaster's next turn. As a bonus action on each of its turns, the beastmaster can choose to extend this effect until the end of its next turn. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. The beastmaster can maintain this effect on up to two creatures, but loses its necrotic touch attack for the second creature held in this way.

Master of Beasts (3/day). The beastmaster possesses any amount of beasts that have a collective CR of no more than 3. The beasts roll their own initiative, and the beastmaster commands all of them separately or together with its bonus action. The creatures act as allies of the beastmaster, and will fight the creatures hostile to the beastmaster if they are not given a command. The beasts stay under the beastmasters command until they or the beastmaster is killed.

The beastmaster 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 beastmaster regains spent legendary actions at the start of its turn.

Move or Teleport. The beastmaster moves up to its speed without provoking opportunity attacks or uses its shadow teleport.

Necrotic touch. The beastmaster makes one necrotic touch attack.

Immobilize.(Costs 2 Actions). The beastmaster uses immobilize.