Overgrow. If the Decidueye has only 40 hit points left, its Leaf storm attack does an extra 3d10 bludgeoning damage.

 Flyby. The Decidueye does not provoke opportunity attacks when flying out of a creatures reach.

Spirit Shackle. Ranged weapon attack: +7 to hit, range 120 ft., one target. Hit: 37 (5d12 + 5) necrotic damage and the the targets speed is reduced to 0 until the end of their next turn.

Leaf Storm. Ranged weapon attack: +7 to hit, range 60 ft., one target. Hit: 21 (3d10 + 5) bludgeoning damage and the damage of the targets ranged weapon attacks is reduces by 2d10 .

Shadow Claw. Melee weapon attack: +7 to hit, reach 5 ft., one target. Hit: 24 (3d12 + 5) necrotic damage. This attack scores a critical hit on a role of an 18, 19, or 20.