Sword of the Meteorite

While this heavy, dark sword looks like an ordinary longsword, it is actually forged from a meteorite. The sword has five charges and recharges 1d4+1 charges at dawn. If it has 0 charges at dawn, then rolling a 1 for regaining charges causes the weapon to disintegrate. You may non-magically cast earth tremor at second level for 1 charge or fireball at 3rd level for three charges.