deck yu gi oh speed duel Yu-Gi-Oh! - Starter Deck: new Skill Cards introduce legendary Duelists from the Yu Yusei Speed Duel Deck :

When combined with a card like El Shaddoll Fusion, this can really hurt the opponent during their key plays

Butcher Ghoul Demonlord of Ashmouth Endling Evernight Shade Flayer of the Hatebound Garbage Elemental Geralf's Messenger Geralf's Mindcrusher Gleeful Arsonist Hancock, Ghoulish Mayor Haunted One Hound of Griselbrand Howlgeist Mikaeus, the Unhallowed Nardole, Resourceful Cyborg Nearheath Stalker Phyrexian Midway Bamboozle Pyreheart Wolf Relentless Skaabs Shadow of the Goblin Sightless Ghoul Stormbound Geist Strangleroot Geist Treacherous Pit-Dweller Undying Beast Undying Evil Undying Flames Undying Rage Vengeful Vampire Vorapede Witch-king, Sky Scourge Yahenni, Undying Partisan Young Wolf

And in a deck like Shorikai, Genesis Engine, which already is playing as many artifact untappers as you can squeeze in, this is an absolute yes

Friendship truly is magic, but this isn't Equestria