Li Dr Legendary Fight

Hi, I need help beating Dr Legendary. I can solo the whole of LI but the 3rd and final stage of Dr Legendary just spams push spell and then regens 20k HP and my warrior literally can't even get near him long enough to deal substantial damage.

Can someone please help me?

I will pay 1le to anyone who can help x

 

i might be able to help, but i have problems getting throught the rest of LI so...
Bring more people?
I'm a lv 99 assasin rn, with a tanky, high-damage build, with decent speed (when using slider)

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Here's the link to my build, if you think i should improve it for the battle let me know
https://wynndata.tk/s/ad67cw
secondary weapon: slider (41 ws, 3/4 ms)
Other: Arakadicus' Maw, Thrunda Ripsaw (for life steal), Ivory (for health regen), Black (mana steal), Big arm (neutral damage for all def. mobs) and more... i think

I'll be available... i don't know, i'll message you when, i guess. sorry
In GMT time so hopefully i wont wake you up

 

It's been done now, thank you so much though Wynnonymous x