Throne of Thorns
Folding Plate of the Champion Jouster
This item normally looks like a heavy steel brooch or cloak clasp often depicting a heavy helm. On command, the brooch transforms in a clatter of metallic plates and panels to instantly cover the wearer in a complete suit of +2 Champion Full Plate of Jousting, with the design of the brooch displayed on the armor’s breastplate.
In both armor and brooch form and worn a creature that uses a challenge or smite ability, the wearer gains a +2 sacred bonus to AC against attacks from the chosen opponent. Also the item helps its wearer remain mounted and in control of his mount. The wearer gains a +5 competence bonus on Ride skill checks.
The same command word causes the armor to transform into the brooch. The brooch only transforms if the wearer’s armor slot is unoccupied, thus it won’t work if the wearer is already armored.