Fafnir curse version 2

The curse of Fafnir was a 9th-level curse devised by his ex-bride, Sif. Fafnir and Sif had an arranged marriage that was supposed to unite the Dwarves and Drow Kingdoms. Unknown to Fafnir, his new bride was planning on killing his father and stealing his riches. She worked with the god of greed, Abbathor, to make a curse that would kill King Hreithmar during the wedding. Her plans did not work, as Fafnir was cursed instead of his father. Among the commotion, Sif managed to escape. Now, Fafnir searches for a way to cure the curse that has been inflicted upon him and his family. He also plans on confronting Sif and killing Abbathor.
Said curse creates a second personality, think jacakal and hyde, the second personality heightens and doubles his greed and paranoia, making him want to steal or attempt to steal anything not bolted down as well as gaining a distrust of others always assuming the worse in them this also stops him from setting foot or going near places of holy ground such as temples and other areas in addtion he becomes espically vunberable to radient damage, in addition, the curse also slowly turns him into a green drake as he ages this curse stops his intelligent from ever going above 8 but it not all bad as it does boosts his other stats such as his strength, dexterity, and constitution by 2 also if something were to attempt to read his mind they must make a wisdom save of 18 or higer on a fail or they would take 4d6 pyschic damage and deal with a mental roar from Rakimō thats throws them from his mind were he would say you dare mess with the mind of a drake on a success they take half damage and contuinte uninterrupted if any one would attempt to cure Fafnir of his curse they must make a wisdom save of 15 or hear the booming sickly voice of Abbathor Dwarf God of greed, posion and curses which would say you dare mess with some of my best work which would echo around the whole area as the person attempting to heal him of his curse if they fail the save would get hit by 3d6 of posion, necrotic and acid damage otherwise they just talk half damage if he were to experience something that would cause a great deal of anger/shock and or stress he must make a wisdom check or his green drake personality emerges and doesn't leave until he sleeps or the situation goes away when the other personality comes out it writes and speaks draconic there also a draconic aura around while the other personality is out which refers to its self as Rakimō This happens also 1 a month maybe more anytime there a full moon. Additionally, now that Fafnir has reached level 10, more of Ramone's power becomes apparent. Ramone/fafnir is now immune to being frightened or stunned. He also gains a swim speed equal to three times his walking speed, as well as the ability to breathe underwater. He also gains immunity to poison and acid damage, and can now add his con and strength modifier to his AC, but he must not be wearing any chest or arm armor to gain this ability. Last but not least, any unarmed attacks that he uses, he can use a d10 for the damage dice; for example, 2d6+5 becomes 2d10+5. Also, any time Ramone attempts to intimidate something and they are immune to being frightened, they instead become stunned for the purpose of bypassing immunity. He can only do this once per creature and an encounter. He also gains an advantage on intimidation skill checks

Note - maybe other effects, as Fafnir levels up, become more prevalent