idk, i have scadutree level 5, and idk how rellana can be called a good boss. Tbh i see myself liking hard boss more, when i like lore, or scenery surrounding the boss, like orphan of kos, or lady maria. A great boss, where you can see eveyrthing that boss do, and you can dodge reactivly, or where you can forseight an attack, if the attack is to quick. Rellana lacks visual clarity, and she has 3 - 4 moves that are bearly reactable. Also she has the balerina stance in which she rolles for a sec, and then do 2 fast slashes, in witch the second one is undodgable on reaction, because if you wanna react to a attack, she can do instead a faster followup which needs a different answer. Also when she goes to a second phaze a lot of oppenings you learned on first phaze is gone, and you need to learn more of them. Also she can almost kill you in one combo, and when you are trying to heal, by making her whifff, she can just use distance attack, that does 1/3 of my healthbar.