Almorzar's Metalomancy Silent Chainsaw

You cast this spell on weapon that is imbued into your armor. Upon casting the spell the metal begins to develop sharp edges that rotate at violent speed. Whenever this weapon deals damage it now deals an extra 1d6 of slashing damage to the target. 

Metal Absorption. When you attack a target with a weapon affected by this spell  and you hit the target, you perform Meal Absorption if the target is wearing metal armor and the attack hits. The targets armor blends into your weapon. Your weapon now does an additional 1d6 of slashing damage. In addition, the attacked parties AC decreases by one.

Higher Levels. When you cast this spell at 2nd level, you can affect any metal object or weapon with this spell.