Weak aura group that tracks absorb shields. Currently tracks:
Ursoc's Fury (Guardian Druid)
Matted Fur (Druid)
Blood Shield (Blood Death Knight)
Celestial Brew (Brewmaster Monk)
Ignore Pain (Protection Warrior)
Tempest Barrier (Mage)
Blazing Barrier (Fire Mage)
Prismatic Barrier (Arcane Mage)
Power Word: Shield (All)
Arcane Bubble (Assembly Guardian's Ring)
Enduring Scales (Granyth's Enduring Scale Trinket)