Bold indicates a Pokémon gains STAB from this move. Italics indicates a Pokémon whose evolution or alternate form receives STAB from this move. A dash (−) indicates a Pokémon cannot learn the move by the designated method. An empty cell indicates a Pokémon that is unavailable in that game/generation.
In Pokémon UNITE, Spirit Shackle is Decidueye's first move. It is obtained by evolving from Dartrix and upgrading Leafage into it instead of Razor Leaf. The user charges power before firing a large arrow in the designated direction. Damage dealt increases the longer power is charged (with 6 breakpoints), but movement speed is decreased by 25% while charging. If this move hits after power is charged to the maximum, it can stitch enemies to the ground. The affected enemy has their movement speed decreased by 80% for a short time while in the area, and receives damage upon leaving the area. A maximum of 3 uses can be kept in reserve for this move. At level 11, the move deals 15% more damage to enemies under 50% HP.
Decidueye draws an arrow quill from its wing, with a shadowy aura surrounding the tip after it's drawn, and fires it at the opponent. The arrow loops around the opponent before striking the ground in front of it, creating a burst of blue fire-like energy around the opponent or sticking the opponent's shadow in place, preventing the opponent from moving.
The move's Japanese name, kagenui ("shadow stitching"), refers to a fabled ninja technique that restrains a target's movements by pinning their shadow with a kunai or shuriken.