Sanctified Ymirjar Lord's Battlegear

Sanctified Ymirjar Lord's Plate is the mid-range Tier 10 set for DPS Warriors.

Note that items from the Ymirjar Lord's Battlegear and Sanctified (heroic) versions also satisfy the set bonus requirement.

Source
The parts of this set are Item Level 264, and require purchase of the item level 251 equivalent, along with a token gained from defeat of the last boss of each wing: on 25 man normal mode, or 10 man hard mode.

The Item Level 251 versions are those purchased solely with Emblems of Frost.

The Item Level 277 versions are upgraded from the 264 versions, with a Protector's Mark of Sanctification (heroic).

All three versions count towards satisfying the set bonus requirements.