Like, from what I can tell, you don't get a combat ability till level 11 with Harm Intangible which only works on a small range of enemies.
Actually, if you keep your previous level system and just make it where you get a passive and an active ability each level you could improve your class.
You mentioned before being able to combine with a spirit and then get special abilities depending on the spirit, but I don't think you actually added it as a skill in your class. Maybe add skills that change depending on which spirit you're channeling and then add the ability to add a spirit as a partner every four levels.
Romans 8:31 What, then, shall we say in response to this? If God is for us, who can be against us?
1 Corinthians 13:1-3 If I speak in the tongues of men or of angels, but do not have love, I am only a resounding gong or a clanging cymbal. If I have the gift of prophecy and can fathom all mysteries and all knowledge, and if I have a faith that can move mountains, but do not have love, I am nothing. If I give all I possess to the poor and give over my body to hardship that I may boast, but do not have love, I gain nothing.