Bigby's Battering Gauntlet

Evocation 

This spell brings into existence a shimmering, violet force shaped like a battering ram (with a clenched fist as the ram’s head). The force assumes a cylindrical shape 12 feet long, and about 2 and a half feet wide. The ram can be directed to attack a door or other piece of construction upon being created, and can be assigned to a new target by taking a Direct A Spell action (a move-equivalent action). The battering ram makes one attack per round, using your base attack with a –1 size penalty (Large size). There is no penalty for lack of proficiency. The ram deals 3d6 damage, just as a normal ram, but without requiring any crew. Instead, assume the crew has a total Strength modifier equal to your caster level (maximum of +20). See the DMG pg. 100 for more information. If the wall strikes a door that is magically shut, such as by an arcane lock, you make a dispel check (maximum of +15) against a DC of the spell’s caster level +11. Success dispels the spell and allows the ram to continue attacking, but a failure on the dispel check results in the Bigby’s battering gauntlet being destroyed instead. The ram cannot target anything but construction (such as walls or doors). The ram is effected by spells and physical attacks as a Bigby’s interposing hand, including identical AC and hit points. 

Focus

A metal rod with a chain mail gauntlet slipped over one end