Mismagius

Between Shadows, Megas, and moveset updates, Mismagius has lost all of its real viability in raids. Its damage and bulk are too low, leaving it a very poor investment in general that has little long-term potential.

Best PvE Offensive Moveset

• Hex is superior to Sucker Punch on offense.

• Shadow Ball is superior to Dark Pulse in almost every way.

• Magical Leaf, Psywave, and Dazzling Gleam don’t have a real offensive purpose.

Best PvE Defensive Moveset

• Hex and Magical Leaf are the Fast Moves of choice for defense. Hex offers great neutral coverage, higher energy generation, and semi-similar damage post-STAB, while Magical Leaf offers strong Fast Move power and different coverage.

• Sucker Punch has very similar coverage to Hex, but it's substantially weaker.

• Psywave is a sub-optimal move on defense.

• Dazzling Gleam offers coverage against common gym attackers.

• Dark Pulse can prove to be tricky to dodge and has great neutral coverage.

• Shadow Ball has the highest per-move damage among Mismagius' Charged Moves, but it's also the easiest to dodge.

Hex is generally recommended for its superior energy gains along with benefiting from STAB. Sucker Punch lacks STAB and as a result the damage difference between the two fast moves is minimal, but is a step down in energy generation. 

Shadow Ball is powerful with STAB and efficient in Damage Per Energy (DPE), though it has a moderately expensive energy cost. Dark Pulse costs slightly less energy, and is the cheapest charge move option available. Dazzling Gleam provides useful coverage, especially against Dark-type Pokemon, but its high energy cost is unappealing.