Use Dark Magician, the magician girls, and Magicalize Fusion to bring out Quintet Magician!
Or you can bring out Dark Paladin Girl for some negation power.
One strategy I noticed white testing is to use Polymerization to summon one DP Girl, and then use Magicalize Fusion to summon a second by banishing the materials used for the first. With two on the field, you have a lockdown as they protect each other and other spellcasters from attacks.