If you control an "Artmage" monster, you can activate this card the turn it was Set.

When your opponent activates a monster effect: You can banish 1 Fusion Monster you control (until the End Phase), and if you do, negate the activation, and if you do that, destroy that monster, then if you have 3 or more different Monster Types on your field, you can return all Spells/Traps your opponent controls to the hand.