The mind body is a piece of armour that can be made after completion of Elemental workshop III. You must have completed Elemental Workshop III in order to make the body, although only Elemental Workshop II is needed to be able to equip it. It is similar to the other parts of the armour set that were released with previous quest installments. It has the highest Magic defence bonus for players with level 1 Defence, and is therefore a good choice for pures looking to increase their defence to magical attacks.
A mind body can be created by smithing two primed mind bars on the anvil in the Elemental Workshop, provided you have completed Elemental Workshop III. You will gain 60 experience for doing so.