After he drinks wait 1 second then SS (resets Wingstorm), he'll do a ranged attack if you go to far away that hits 4 times just press 1 and block them all. After that you can CC him.
Don't hit into seed shroud. Yes, very hard I know, learn to control yourself.
Don't fight them in petals(you can't use guard skills and summoner heals inside, plus negates any evasion if you have that kind of buff)
Hi, Since I didn't find much information on gamepad use with BnS, I made a short guide. By the way, if you want buy Blade and Soul gold ,you can go to our website.
Don't sweat upgrading right now. I know there's a stigma for players who are on profane, but you don't really need to upgrade to siren to complete the story line.