Shield Vessel

The shield vessel spell allows the mage to place a shield spell around a structure, protecting everyone within the area of effect. The target is usually a ship, but a mage could conceivably adapt the spell to protect a small keep or tower. The shield vessel protects the crew of the vessel just as the shield spell protects its caster. Since the shield effect totally surrounds the vessel, anyone onboard receives a +1 bonus to saving throws against attacks that originate from off the ship.

A series of finely wrought pieces of silver jewelry made to resemble small shields make up the material component of the spell. The silver shields must be placed around the perimeter of the vessel to be protected. The total value of the shields must be at least 500 gp. The silver shields are not consumed by the spell, allowing the spell to be used again and again. However, if the total value of the shields falls below 500 gp (through wear, battle-damage, vandalism, theft, etc.), the shield vessel spell does not work.