Crystalized Armor (revised)

User creates a suit of armor around an ally. When this ability is cast the target cannot move or use an action but the caster can move it but this costs an action. The durability of this armor is equal to the casters health and AC. If a gem is held, durability is buffed depending on the value of the stone, 10 to 99 g is buffed to 1.2 times caster's hp and ac 100-500 is 1.3 is. buffed caster's hp and ac 501-1000 is buffed 1.5 times 1000+ is 2 times caster's hp and ac. (cannot stack)