Whether by casting huge Eldrazi or looping many spells, Omniscience is known to end games
Heres what to look for
In Standard, I can see this functioning along the lines of a fixed Smugglers Copter the stats are the same, with the condition being it will always draw you lands

Gallery and List of Blood Token Cards Anje, Maid of Dishonor Arterial Alchemy Belligerent Guest Bloodcrazed Socialite Blood Fountain Blood Hypnotist Blood Petal Celebrant Blood Servitor Bloodroot Apothecary Bloodtithe Harvester Bloodvial Purveyor Bloody Betrayal Ceremonial Knife Citystalker Connoisseur Exsanguinator Cavalry Falkenrath Celebrants Falkenrath Forebear Glass-Cast Heart Gluttonous Guest Grisly Ritual Ivora, Insatiable Heir Jaws, Relentless Predator Kamber, the Plunderer Lacerate Flesh Markov Enforcer Moonstone Eulogist Odric, Blood-Cursed Old Rutstein Olivia's Attendants Pointed Discussion Restless Bloodseeker / Bloodsoaked Reveler Sanguine Brushstroke Sanguine Statuette Shilgengar, Sire of Famine Sigarda's Imprisonment Strefan, Maurer Progenitor Transmutation Font Syphon Essence Vampire's Kiss Vampires' Vengeance Voldaren Bloodcaster / Bloodbat Summoner Voldaren Epicure Voldaren Estate Wedding Security Best Blood Token Cards #3 Transmutation Font Transmutation Font just so happens to also make clues and food, and be a tutor to cheat an artifact into play

Sram, Senior Edificer is a solid option because he allows you to draw a card each time you cast an Equipment or Aura