I Dont know if this is correct or valid || Im using an extra turn, It doesnt say "win this turn" so i think it's legal 1-Tap Tundra to cast mystical tutor for Culling The Weak. Trigger Birgi (R) 2-Tap Volcanic to crack clue. 3-Tap Command Tower to cast CtW sac Lotho, trigger Birgi (RBBBB) 4-Cast Sol Ring (RBBBB) 5-Crack 2 treasures and tap Sol Ring to cast HBH, trigger Birgi (RBB) 6-Cast Underworld Breach, trigger HBH bounce Sol Ring, Trigger Birgi (RB) 7-Cast Sol Ring, Trigger HBH bounce Breach, Trigger Birgi (RB) 8-Tap Sol Ring to cast Breach, trigger HBH bounce Sol Ring, trigger Birgi (1RB) 9-Loop Sol Ring and Underworld Breach with HBH netting R thanks to Birgi. 10-End the loop bouncing drannith (inf colorless and inf red and B) 11-Crack the last treasure and exile Mana Vault and 2 fetches from gy to cast mystical tutor for FF, trigger HBH bounce Birgi to hand (inf colorless and inf red and B) 12-Cast Harnfel, trigger HBH bounce Sol Ring to hand.(inf colorless and inf red and B) 13-Discard Flare to gy to exile FF from top + another card (inf colorless and inf red) 14-Cast FF, trigger HBH bounce Harnfel to Hand. 15-Cast Birgi bounce Breach. 16-Go to Next turn, make inf mana, start casting Sol Ring with Tundra. 17-Cast Mystical (with Volcanic) from gy to look for BF 18-Use Harnfel to cast BF from exile with inf storm 19-Use Mox Amber to make inf W and B mana. Use Orcish to kill your opponents ||

this is a really cool line, there is one issue with it though... ||you are exiling a random card off the top with horn... and if that card just so happens to be brain freeze or bowmaster your entire line duds. this single random exile makes the entire thing nondeterministic. This a chance you would take anytime any day in a real game, but I am looking for a deterministic line. it needs to be a 0% chance of failure Pursue this idea some more, you are onto something. there are 2 intended lines and this is close to one of them.||

I believe this is the intended first solution. Ready for things to be stuck in the Upside Down? ||Cast Sol Ring make a Birgi mana (2C 1R 3 Treasures 2 Lands) || ||Cast Mystical Tutor stack Lotho trigger below Birgi mana let mana resolve and then hold priority (2C 2R 3 Treasures 1 Land) || ||Hard cast Flare copy Mystical tutor make a Birgi mana (1C 1R 3 Treasures 1 Land) || ||Tutor Chain of Vapor and crack clue to draw it (3 Treasures 1 Land) || ||Cast Chain of Vapor targeting Sol Ring make a Birgi mana (1R 3 Treasures) || ||Sac a land to continue the chain target Will hold priority and cast Sol Ring make a Birgi mana (2C 1R 3 Treasures) || ||Make a clue from Will bouncing sac a land to continue the chain targeting Sol Ring (2C 1R 3 Treasures) || ||Sac your final land to continue the chain targeting Drannith (2C 1R 3 Treasures) || ||Op can attempt to continue the chain, but we will respond by casting Underworld Breach make Birgi mana (1C 1R 3 Treasures) || ||Escape Mana vault exiling 3 lands make Birgi mana (3C 2R 3 Treasures) || ||Cast Hullbreaker Horror make a Birgi mana (1R 1 Treasure) || ||Cast Sol Ring bouncing Mana Vault present a loop making infinite Red and Colorless end the loop with Mana Vault in hand (1 Treasure) || ||Escape the Flare exiling 2 lands and Chain of Vapor copy Mystical tutor remember that is still on the stack? (1 Treasure) || ||Tutor Brain Freeze and draw it with the clue and cast it (with our remaining treasure) milling our whole library|| ||Escape Mox Amber and generate infinite Black mana with Hullbreaker Loop then Bowmaster the table for the win!||

Okay i got It, just need to reread || The poing where i use Birgi to draw a card i could just play Culling from yard sac ing Will to get the clue, so i can draw the ff and make it deterministic||

@Remra That is correct! ill copy your line in the spoiler section crediting you. @SendoWiis ||your going to need to tweak it a bit more. if your killing both lotho and will, mox amber wont be able to tap for W or B||