Any combination of Undaunted Infiltrator, Undaunted Unweaver, Noble Duelist, Infallible Aether, or maybe Sergeant's Mail can result in very strong heavy attacks with minimum investment in offensive stats.
No, these builds are not op as there is plenty of counterplay and they tend to be one trick ponies in terms of offense.
There's a thread about similar builds here:
https://forums.elderscrollsonline.com/en/discussion/492160/undaunted-heavy-attack-pvp-build-magplar-and-magdk/p1
Hakkanistorm wrote: »
Joinovikova wrote: »But alk of these simply do not give so much dmg there must be some exploit .. but i cant find it