Swanna

Swanna made its debut in Pokemon Go for the game's 4th anniversary, though it's not particularly useful for any aspect of the game. More raw Attack is needed to be not be completely outclassed by existing powerhouses. 

Best PvE Offensive Moveset

• Water Gun is the best fast move available, but Bubble Beam is a very poor charge move. 
• Air Slash pairs well with Fly to fulfill a Flying-type role. 
• Hurricane is behind the competition.
• Ice Beam is underwhelming without STAB. 

Best PvE Defensive Moveset

• Air Slash performs better on defense due to its higher base power. 
• Water Gun has the perk of not being resisted by Electric-type attackers, but its damage output is still pitiful. 
• Hurricane has the earliest damage window, but may be difficult to access as a 1-bar move. 
• Bubble Beam is the easiest to dodge, but can be spammed frequently as a 3-bar move. 
• Ice Beam lies in the middle as a 2-bar move, though it lacks STAB. 
• Fly is strong, but Swanna is unlikely to get to it before fainting.

Water Gun and Air Slash both have identical STAB damage output and energy generation, though Water Gun's faster duration makes it more responsive and is generally the preferred option . Pick whichever one you need the appropriate typing coverage for. 

Bubble Beam costs the least amount of energy, and can be used to primarily bait shields, as well as debuffing the opponent. Fly is the best secondary option, costing a moderate amount of energy but dealing a good amount of damage. Hurricane costs the most energy, but is also the most powerful charge move available, and hits hard with STAB. Ice Beam offers Ice-type coverage, costs less energy than Hurricane, but can be underwhelming without STAB.