Looks like T4 and DS heroic tier armor had a fight and someone picked up the pieces and made this, I really like it :P
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wtb more purple on gloves and boots.
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Yeah, 6/8 piece bonuses were dropped because they didn't want to make having full tier items mandatory for raiding, 4set bonuses is fine imo. Especially with no reforging and less gems there needs to be some freedom to pick offset items with stats you want/need.