Just for fun you can walk under water. I did this using a conjuror, not sure what else it would work for, go under water as a different form (shapeshift) (first possible at level 19, i think) use the aqueous stone to breathe under water, as you are swimming under water keep moving forward while cancelling the form change, when the form change is cancelled and you are back to your normal state you will be walking under water like you would on the ground. Did this using the change into the igneous form and back to normal form.
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