Hakkorhn Smashlord is a Magic affinity legendary from the Skinwalker faction. He has a great support based kit able to fully cleanse your team of all debuffs and then place a Block Debuff buff on them whilst also healing them. Hakkorhn can be great in an Arena team that struggles to go first countering the incoming damage with healing and cleanses. In this type of set up a high HP shield set is really effective.
Hakkorhn also has a strong damage ability on his A3 however will not be your main source of damage.
Hakkorhn is great in dungeon running supporting the team, particularly in Spider and Dragon.