Antasan Klaws

Aberrant Quickness (Recharges after a Short or Long Rest). can take an extra action on its turn.

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

Christmas legs. can jump 20 ft and make a running jump 30 ft

tentacle rod. holds the magic item [magic item]tentacle rod[/magic item] and makes attacks with it.

Innate spellcasting. is a 5th level spellcaster, can cast the following spells for free.

Ray of Frost (2d8), Burning Hands

1st level (3/3) Flaming Sphere, Misty Step

2nd level (3/3) Bestow Curse, Fire Shield

3rd level (2/2) Resilient Sphere, Hallucinatory Terrain

4th level (1/1) Ice Storm

Multiattack.  makes two Tentacle attacks.

Multiattack. Ho Ho Ho casts [spell[Resilient Spere[/spell] on a target, then picks up the sphere and throws it at another target. DEX sv DC 15 or take 2d10 bludgeoning dmg

Tentacle rod. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 5 (1d4 + 3) piercing damage. If the target is a Large or smaller creature, it is grappled (escape DC 15). Until this grapple ends, the target is restrained, and  can’t use this tentacle on another target. If this attack is a critical hit, the target also can’t breathe or speak until the grapple ends.