Elemental Lock

You diminish the elements of one's attack leaving it physical to the world instead of magical. When used on a single target and they fail a Wisdom saving throw, their elemental attack is changed to slashing damage even when the magic energy used wouldn't form into that damage. Additionally, any effect causing spells will be half the save dc roll needed for creatures affected by it. The effect of the spell ends after 5 minutes. This spell does not work on elemental creatures due to the stronger ties to their elements.