Naganadel

Naganadel is one of the absolute strongest Poison Type attackers in the game, with a Dragon sub-typing to let it stand out with its double-resistance to Grass Type attacks. This all makes it an outstanding Pokemon, right...? Well, there's one word above that should instantly raise a red flag for just about anyone familiar with Pokemon Go's raid system: Poison. This is a type that sadly cannot keep up with its direct competition from other types at all when it wants to counter Grass Types, and its Dragon sub-typing is a hinderance when Fairy Types come into the equation. 

Sadly, Naganadel is a good Pokemon, but it just doesn't have what it takes to be really good.

Best PvE Offensive Moveset

• Poison Jab and Sludge Bomb is definitely Naganadel's best possible moveset.
• Air Slash and Acrobatics... can work? I suppose? But Flying is one of the strongest types in the game, so PLEASE just use some TMs.
• Dragon Pulse, Dragon Claw, and Fell Stinger are not worth a second thought.

Poison Jab is a much better move than Air Slash

Dragon Claw is a cheap STABed Charged Attack and will be the move that Naganadel clicks the most. Sludge Bomb is a mid-cost STAB Charged Attack that can sometimes be a nuke. Fell Stinger can be used to boost Naganadel's attack, turning it into somewhat of a sweeper, but the move itself deals rather forgettable damage. Acrobatics is expensive but can provide coverage against some Bug- and Fighting-type Pokemon. Dragon Pulse is redundant and largely useless.