Idk if it's cEDH or just Premiumn Jank but it is designed to win on turn 0 so here are the options to do that:
ShowOmni: Opening Hand must have Lotus Petal, Simian Spirit Guide, either Sol Ring or Mana Vault, Leyline of Anticipation, Show and Tell, Omiscience, Enter the Infinite
Pre-game: Leyline of Anticipation on the field
In Response to the first player ending their upkeep: Cast Lotus Petal, and either Sol Ring or Mana VaultGC with Simian Spirit Guide then Cast Show and Tell targeting Omniscience then Cast Enter the Infinite and win the game with your deck in your hand and everything free and with flash
Consult the Oracle: Opening hand must have Gemstone Caverns and extra card for a luck counter or Lotus Petal, Dark Ritual, Entomb, Simian Spirit Guide, Shallow Graveyard, Demonic Consulatation, you can not have Thassa's Oracle in your hand.
Pre-Game: Gemstone Caverns
In Response to the first player ending their upkeep: Cast Dark Ritual, Cast Entomb targeting Thassa's OracleGC from your deck (note: Thassa's Oracle can not be in your hand), Cast Shallow Grave (exiling Simian Spirit Guide for another mana) targeting Thassa's Oracle, In response to Thassa's Oracle entering the battlefield cast Demonic Consultation naming something not in your deck, let the stack resolve winning the game.
Dramatic Ballista: Opening hand must have Leyline of Anticipation, Isochron Scepter, Dramatic Reversal, Walking Ballista, and at least a net 4 mana from nonland sorces
Pre-Game: Leyline of Anticipation
In Response to the first player ending their upkeep: Cast mana sorces, Cast Isochron Scepter targeting Dramatic Reversal tap Isochron Scepter ad nausium to create infinite mana, Cast Walking Ballista for enough mana to win the game.
Necrotic Ballista: Dark Ritual, Cabal Ritual, Leyline of Anticipation, Buried Alive, Reanimate, and either lotus petal or gemstone caverns and an extra card for a luck counter)
Pre-Game: Leyline of Anticipation and Gemstone Caverns with a luck counter on it.
In Response to the first player ending their upkeep: Cast Dark Ritual, Cast Cabal Ritual, Cast Buried Alive targetting Phyrexian Devourer, Necrotic Ooze, and Walking Balista. Cast Reanimate targetting Necrotic Ooze. Have 120 CMC left in your deck.
Rock Powered Staff: Leyline of Anticipation, Lotus Petal, Simian Spirit Guide, Mana Vault or Sol Ring, Mox Opal, Grim Monolith, Power Artifact, Staff of Domination
Pre-Game: Leyline of anticipation
In Response to the first player ending their upkeep: Cast, Mana Vault or Sol Ring with Simian Spirit Guide, Lotus Petal, and Mox Opal, then Cast Grim MonolithGC with Mana Vault, Cast Power Artifact with Lotus Petal and Mox Opal, targeting Grim Monolith, Genorate infiniate colorless, Cast Staff of Domination, draw your deck, figure out the rest with infinitate mana and your whole deck in hand with flash.
Seeking a Headache: Opening hand must have Leyline of Anticipation, Lotus Petal, Mox Opal, Simian Spirit Guide, Sol Ring or Mana Vault, and Spellseeker
Pre-Game: leyline of Anticipation on the field
In Response to the first player ending their upkeep: Cast Sol Ring or Mana Vault with Simian Spirit Guide, Cast Mox Opal, and Cast Lotus Petal
Cast Spellseeker with mox opal and either sol ring or mana vault placing the Inalla trigger on the bottom of the stack and the search ability on top. (Inalla trigger)
Resolve the search ability and grab Culling the Weak. (Inalla trigger)
In response to the inalla trigger, cast culling the weak with Lotus Petal targetting the original Spellseeker. You now have BBBB in your mana pool. (BBBB, Inalla trigger)
Now with one of your Black mana, Pay for the Inalla trigger creating a copy of Spellseeker and searching for Unearth. (BBB)
Cast unearth targetting Spellseeker. (BB,Spellseeker trigger, Inalla trigger)
Use a Black Mana to pay for the inalla trigger. Resolve both of the spellseeker searches grabbing Burnt Offering and Finale of Promise. (B)
Using the one Black mana, cast burnt offering targetting the real Spellseeker. Add RRB to your mana pool. (RRB)
Cast finale of Promise targetting culling the weak and unearth. (On the stack bottom to top: unearth and Culling the weak)
Cast Culling the weak targetting a copy of Spellseeker (there should be 2 token copies). Cast unearth targetting the spellseeker in your graveyard. (BBBB, Inalla trigger, spellseeker trigger)
Resolve the Spellseeker trigger searching for entomb. (BBBB, Inalla trigger)
Pay one Black mana and resolve the Inalla trigger. Search for reanimate. (BBB, Hand: entomb and reanimate)
Cast entomb placing Scholar of the Ages in your graveyard. (BB, Hand: reanimate)
Cast reanimate targetting scholar of the ages. (B, Inalla trigger, scholar of the ages trigger, -7 life)
Resolve the scholar of the ages trigger, returning entomb and burnt offering to your hand. (B, Inalla trigger, Hand: entomb and burnt offering, -7 life)
In response to the Inalla trigger, Cast burnt offering on scholar of the ages. (BBBBBBB, Inalla trigger, Hand: entomb, -7 life)
In repsonse to the Inalla trigger, cast entomb placing shallow grave in your graveyard. (BBBBBB, Inalla trigger, -7 life)
Now, pay one Black to resolve Inalla's trigger and return Burnt offering and Shallow Grave to your hand. (BBBBB, Hand: Burnt offering and Shallow Grave, -7 life) Cast burnt offering on the real scholar of the ages and then cast shallow grave targetting it and returning it to play. (Tons of mana, scholar of the ages trigger, Inalla trigger, -7 life)
Resolve the scholar of the ages trigger to return burnt offering and shallow grave to your hand.
Resolve and pay for the inalla trigger returning entomb and anything else to your hand.
You can now repeatedly cast burnt offering on the real scholar of the ages and reanimate it with shallow grave to create infinite scholar of the agess. This will also allow you to entomb all your instants and sorceries from your deck and put them into your hand with scholar of the ages's ETB.
You should be able to do this enough to make Grapeshot Leathal
