(2) Set: Mortal Strike and Bloodthirst critical strikes have a chance to grant you 150 haste for 5 sec.
(4) Set: Increases the critical strike chance of Mortal Strike and Bloodthirst by 10%.
Siegebreaker Shoulderplates is one of 5 pieces of Siegebreaker Battlegear, alongside Siegebreaker Battleplate, Siegebreaker Gauntlets and Siegebreaker Helmet and others. Bonuses activate at 2 pieces and 4 pieces equipped.
In Wrath of the Lich King it is item level 245 and requires level 80. In MoP Classic it is item level 225, requires level 80 and sells to vendors for 1c.
Read from the World of Warcraft client build files.
How Siegebreaker Shoulderplates Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Siegebreaker Shoulderplates suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Items Numbered Next to Siegebreaker Shoulderplates
Blizzard numbers items as they are created, so the named items next to ID 46287 (46282 to 46292) were usually added in the same batch as Siegebreaker Shoulderplates: the same quest line, zone, vendor or reward set.