The Crystal Cloak grants the Tzarina the Ward Save (4+) special rule. In addition, all attacks directed against the Tzarina in close combat suffer a -1 to both the To Hit and To Wound dice.
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
The Crystal Cloak grants the Tzarina the Ward Save (4+) special rule. In addition, all attacks directed against the Tzarina in close combat suffer a -1 to both the To Hit and To Wound dice.