I Need Help With Amadel (excavation Site D)

I can do the first phase, but the part where he turns into a wither always kills me.
If anybody could help me, I would really appreciate it!

 

can i have your discord (i just bring 3 pots and it usually works out)

 

god, yeah, I struggled so much with getting 1 shot in the last phase. here are my tips (for a mage)

KEEP YOUR DISTANCE. he will always try to get close to you, and his close-range damage is almost always an instant-kill, and his ranged damage can kill you quickly if you aren't constantly strafing.
unless you have stupid high mana regen, or your entire build is focused on it, DON'T USE METEORS. you will always need the mana for ice snake, heals, and tp to keep yourself alive.
THIS IS A BATTLE OF ATTRITION. the fight won't be quick but keep chipping away at him for a while, with a good strategy (and potions) and victory is guaranteed.
in his wither form he teleports everywhere. this is where you are the most vulnerable. always watch for where he is, and get away fast with tp.
as a final note, little skull things spawn around the field, which shoot at you. if you can, actively avoid them while fighting Amadel (because they're super annoying), or take some time to kill them before continuing.

 

Had to /kill first time because he was outhealing me, second time took like 30 mins

 

ESPECIALLY be wary for the Explosion spell as well. It deals like 3000 damage?

 

Just spam meteors and don’t get hit by the explosion spell, he does 0 damage otherwise