Elemental Fury

You touch the blade, shaft, or handle of any melee weapon.  The business end of the weapon will become wrapped in an elemental manifestation of your choice (fire, ice, or acid) for the spell's deration.  This does not damage the weapon in any way, and it will count as a magical weapon for the duration.

For the duration of the spell, the weapon will do an additional 1d8 damage, depending on which elemental you chose.  

For each level above 3rd that this spell is cast, an additional 1d8 is added to the damage caused.