With this spell the Black Order Mage may rive or split a slab of worked stone in half. This is the opposite of the 1st Circle joining spell. The spell only works on dead stone, i.e. not mountains, bedrocks and so forth, only worked stone, and on no stone more than a hand’s breath thick (i.e. not city or castle walls but certainly doors and similar). With a sharp crack the stone simply shatters under the Mage’s hand. The maximum area affected is 2 strides on a side.
power+1 finger of thickness per power level, or +1 stride area per power level