Dualclass for Tyrr DB

Hey there,



i was wondering, what would be the best choice for dualclass as Tyrr Doombringer?



Mostly in case of Olympiad and open field PvP (small group and 1vs1).



I read for Oly you should pick tank, take a shield and 1h sword against melees for the extra % shield def.



But Iam experiencing Mana issues sometimes, so wouldnt be Iss or Wynn more apropriate for the clarity talisman?



Thanks in advance!