Hurricane Disc (3.5e Spell)

''You raise your hand, and a spinning vortex of water vapor spirals into existence. You throw it forward, cleaving the enemy in two.''

You create a 5-foot-diameter and 1-inch-thick swirling disc of sharp wind, which you can throw at the opponent and deal damage or sever apart limbs. The disc takes up a 5-foot square, and can travel up to 60 feet in a round. Whenever it passes over a square with a creature, you may make a ranged attack roll (not a touch attack) to hit it, dealing 1d6 magic slashing damage per caster level and a 18-20/x2 critical (maximum 20d6). On a confirmed natural 20, the disc severs a limb of your choice, up to and including the head (which is typically fatal). The body is also cut into pieces if the damage is enough to kill them.

Each round you concentrate, you can move the disc another 60 feet in any direction you choose. Solid objects in the way are cut through if the damage is high enough to destroy them. You can only target any one creature once per round, no matter how many times you have the disc pass over them. The spell ends when you cease concentration, the duration ends, or you attempt to cut through a solid object and fail to break through.