I can't read the whole description on the Dungeon Challenge 3.5

It only says

"Put a benefit of blocking hexes in a champion or use a skill that removes hexes before defeating..."

In wich keep and stage do I have to do this challenge?

I Cant get it too.

I guess this is still broken? I'm stuck here too. I've tried it on auto and manual numerous times with two debuff toons/moves and it won't give me credit. I win every time but the challenge will not register at all.

I passed with:   Elhain

                         Grizzled Jarl

                         Guardian

                          Theurgist

                          Kytis

Have done stage 7 multi times void challenge 3.5 have placed bock buffs and remove buffs during the game but it is not recognising the completion 

How do I attach the photo to show team 

Using Muckstalker, Honour Guard, Seer, Basileus and Galek Yes beating stage 

Thanks 

Have done stage 7 multi times void challenge 3.5 have placed bock buffs and remove buffs during the game but it is not recognising the completion 

How do I attach the photo to show team 

Using Muckstalker, Honour Guard, Seer, Basileus and Galek Yes beating stage 

Thanks