Ales Nebulae

Flyby. The ales nebulae doesn't provoke opportunity attacks when it flies out of an enemy's reach.

Gravity Field. The ales nebulae emits a gravitational field. The area within 30 feet of it is difficult terrain for other creatures.

Innate Spellcasting. The ales nebulae's innate spellcasting ability is Intelligence (spell save DC 14, +6 to hit with spell attacks). It can innately cast the following spells, requiring no material components:

3/day: misty step

1/day: dimension door

Multiattack. The ales nebulae makes three attacks: one with its beak and two with its talons. It can use erupting spikes in place of one or both attacks with its talons.

Beak. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) piercing damage. 

Talons. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 8 (2d4 + 3) piercing damage. 

Erupting Strike. The ales nebulae causes the earth to erupt into sharp stones below the feet of a creature that it can see on the ground within 90 feet of it. The target must succeed on a DC 14 Dexterity saving throw or take 9 (2d8) piercing damage.

Invert Gravity. The ales nebulae's speed becomes 0 until the start of its next turn. Each creature within 15 feet of the ales nebulae must make a DC 14 Dexterity saving throw. On a failed save, a creature is lifted 10 feet in the air and is stunned until the start of the ales nebulae's next turn. Any creature that enters the area during that time must also make the saving throw. At the start of the ales nebulae's next turn, gravity reverts again and all stunned creatures are slammed down, taking 27 (8d6) bludgeoning damage and falling prone. On a successful save, a creature can move up to half its speed until it is no longer in the area. If it doesn’t leave the area, it suffers the effects of a failed save.