Magical landmine, developed by the Vikings to protect their longhouses from supernatural threats over the long winter.
A wizard's staff is essentially a battery filled with magical energy. By drawing on the energy within the staff instead of his own energy, a practitioner eliminates the risk of hyperthaumaturgical degradation. However, placing the magic into the staff in the first place is a long process.
A staff contains a core of steel which has been forged in magical flames. The steel has a chemical composition and physical structure (it's folded like a samurai sword) which create a matrix in which the energy is stored.