Please  share  your  champs  line  up,  its  easier  to  help  if  we  know  the  chams  and  artifacts.  

I failed with a team of coldheart and scyl of the drakes and tyrel and Roshard the Tower.

I eventually succeeded  with a team of High Khatun(50) and Visix the Unbowed(60) and Scyl of the Drakes(60) and Crypt-King Graarl(50) and Old Hermit Jorrg(40).

The latter 2 were to try to apply HPburn to block Frost Spider's revive.

On the successful fight, I failed  and the Frost Spider revived, but I continued the fight for a second try, which worked.

Arena was platinum iii . My Hall has minimum Level 2's and Hall has health and defense and accuracy at level 3.

Artifacts minimum Level is 12's. Each had a minimum of 2 Masteries. Scyl of the Drakes is the only Legendary that I have booked. All Artifacts have been Enchanted at least once

I hope this helps people to know how not to do it and also to know one way to do it which did work.