Laomu

Laomu was the first monster to gain a possession move that wasn't his special move, which was game changing at the time. Laomu climbed the ladder all the way to the A+ rank at the time. Sadly, other possession users came and Laomu dropped to the A rank.

Overview
As said before, Laomu was once feared and very powerful, being A+ rank. But now it dropped to the A rank especially due to Eggeater. However, it's far from bad as the A rank is extremly good anyway. Laomu is all about status effects and healing. She can poison, possess, daze, but random effects...she got a lot of use. This made her definetly one of the best nature monsters in the game, as no nature monster is strong enough to reach A+ and S ranks, much like fire.

Positives
 * Laomu got a possession move with very low cooldown.
 * She can apply tons of status effects quickly.
 * She has some healing moves.
 * She is very fast.

Negatives
 * Her power is lackluster and her life isn't the greatest.
 * She can only heal life and not status effects (except her special move)
 * Laomu's special move is complete trash.

Movesets
Spiritual Doom Laomu is a rare good user of the Team Life Runes as giving more HP to her allies means more healing for them. Global Gloom is usually the first move used as it gives random status effects. Puzzlement is the famous possessing move that also gives daze, use it often. As for Noxious Hit, it does damage and poisons. Noxious Blow does the same, but it deals more damage while having a cooldown. Revivify heals one ally for 40% while Harmonizable Nature heals both Laomu and the target for 25%, both are good options, it depends on your taste.
 * Noxious Hit/Noxious Blow
 * Global Gloom
 * Puzzlement
 * Revivify/Harmonizable Nature
 * 2 Team Life Runes, 1 Speed Rune

Counters
Fire types are Laomu's weakness. So General Darmith or Megaosteum are good choices against her. Laomu's trait is hardened, so freezing, stunning and possessing all have a chance to affect her. A Laomu without stamina is useless, so you can also try to remove it.