Zeitgeist - Deus Ex Machina
Frost Giant's Plate
With a thought, this fist-sized ball of jagged ice begins to spread across you, encasing your body in a frigid suit of plate armor.
Aura moderate abjuration and transmutation; CL 12th
Slot armor; Price 37,450 gp; Weight 50 lbs.
This suit of +4 full plate seems to be constructed out of solid black ice. As a swift action, the wearer can reduce the armor to a 5-pound ball of ice which never melts, or expand the ice back into the suit of armor. The wearer of the armor gains cold resistance 10. Once per day as a swift action, the wearer can double his size as if under the effects of an enlarge person spell. The size change lasts for 12 minutes.