Unfortunately, the cards in Lost Origins bear the F regulation mark, so you wont be allowed to play them in Standard format tournaments
This artifact is very useful
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
Yiazmat is extremely difficult to defeat in-game, so since you went through all the perils of completing this sidequest, now your opponents have to go through the perils of battling this nearly indestructible ultimate boss
This creates incredible consistency for your draws since youll always just know whats coming next in your deck
This is because Split Up has the potential to be a one-sided board wipe, even if the opponent makes no attacks into your board