"merciless" trial is too hard

i ve done it 5 times now, last 2 at lvl 77. its the 3rd trial, it shouldnt be that hard, last boss always kills me with this ridiculous large tornado, i even tried with blink. then u got the 7 debuffs on u, pls guys make this easier, this comes from a man playing this game for over 10 years.

edit: oh i am talking about ultimatum ^^ horrible league mechanic, but 1000 times better than sanctum (why those 2? :(( )

btw reddit is overflooded with such posts, but mostly for A3, the "cruel" trial. wait till they get to the 3rd -.-

btw my build is very strong, running t10 maps with no issues, being almost lvl 80 and not having completed 3rd trial is no fun