If it's Accel Synchron, you can do it by just catching Doppel with Junk Ron, but if it's just resistance, there are many things that can be enough with Sobeelze and Gaoh, which have no disadvantages, so you'll need to think carefully about whether you should use it
Indeed, only two cards from the entire Dark Magician archetype have ever been playable (Red-Eyes Dark Dragoon and Magicians Souls) and one of those is completely banned in Master Duel
Should you be able to front the six mana cost or find a way to cheat this into play it is far superior to Necropotence offering its card bounty immediately
However, unlike its original printing in Legend of Blue Eyes White Dragon, which only came as a rare, the Dark Beginning printing bumps the card up to a Super Rare
Your opponent needs to evolve Ralts twice and must draw a Mewtwo ex