0724 Decidueye

Of the three Grass-type Fast Attacks that Decidueye has access to, Leafage is overall the best option. It has the highest energy generation, fueling Decidueye's good Charged Attacks. Having a shorter duration than Magical Leaf also allows Decidueye to be more flexible when it comes to move timing and catching. Razor Leaf's high DPT may be tempting, but Pokemon such as Shadow Victreebel and Tropius are more suited for that role.

Astonish has been buffed repeatedly and is a decent move choice now, should Decidueye want to lean into its Ghost typing more.

Frenzy Plant continues to be one of the best attacks in the game. Spirit Shackle, Decidueye's signature move, is its cheapest Charged Attack and is a much better move than Shadow Sneak. Brave Bird is a solid move and can potentially be a situational choice over Spirit Shackle, but it is a far less reliable move. Energy Ball is simply outclassed by Frenzy Plant.

Thanks to its access Frenzy Plant, Decidueye is no longer a strict downgrade to Trevenant. Unlike Trevenant, Decidueye can put out serious damage to Ghost-resistant threats such as Lickitung and Umbreon. However, Astonish and Spirit Shackle aren't particularly good moves, and Decidueye can struggle to cut through Grass-resistant Pokemon such as Skarmory and Talonflame. Nevertheless, Decidueye can now make a name for itself, and its useful resistances to Water, Fighting, Electric, and Ground gives it opportunities to shine despite its lackluster bulk

Ultra League Decidueye may want to consider Astonish in order to improve its matchup against the ever present Giratina. Otherwise, its viability isn't too different from in Great League. It still competes heavily with Trevenant but Frenzy Plant lets it stand out sometimes.

Decidueye doesn't quite possess the stats necessary to be successful in the Master League.