Chai Golem (flying koi)

Immutable Form. The golem is immune to spells or effects that would alter its form.

Magic Resistance. the golem has advantage on saving throws against magic and magical effects.

Magic Wepons. the golem's attacks are magical.

Organic Magic Immunity. the golem is immune to the effects and damage normally imposed by plant based spells such as entanglment, grasping vines, or hail of thorns.

Pack Tactics. The creature has advantage on attack rolls against another creature if at least one of the attacking creature's allies is within 5 feet of the target creature and the ally isn't incapacitated.

Magic Moss. the golem has moss that deals magic damage on contact.

float. the golem is always air born 

Multiattack. the golem makes two attacks

Moss Spit. magic ranged attack: +2 to hit, reach 20ft., one creature. hit:3 (1d4 + 1) magic damage. the golem can spit the moss it grows on it.

Moss Vomit. magic ranged attack: +2 to hit, reach directly below., one creature. hit:9 (4d4 + 1) magic damage. the golem can vomit the moss it grows on it.

Slam. Melee Wepon Attack: +2 to hit, reach 5ft., one creature. hit: 6 (2d4 + 2) Bludgeoning damage.

Grasping vine. a vine sprouts from the golem's body alowing it to graple a single target within 15 ft that the golem can see. the target must succeed on a DC 12 dexterity saving throw or be grappled. if the target is larger then the golem is pulled towards the target.