Jeska is thrice reborn and pissed!!!
The aim of the deck is to generate infinite mana with Underworld Breach or Dockside Extortionist to nuke the table with Jeska, Thrice Reborn, alongside a small stax package.
The main combo's of the deck are:
-Dockside Extortionist + Cloudstone Curio on a board with at least 3 artefacts, cast Dockside Extortionist while cloudstone cutio is on the field to generate at least 3 treasure, trigger Cloudstone Curio and send Dockside Extortionist back to hand, recast Dockside Extortionist as many times as needed to generate enough treasures to win with Jeska, Thrice Reborn’s -X.
-Smothering Tithe + Underworld Breach + Windfall, cast Windfall while Smothering Tithe and Underworld Breach are on the field and an opponent has at least 3 cards in hand, this will generate at least 9 treasures, use 3 to escape Windfall as many times as needed to generate enough treasures to win with Jeska, Thrice Reborn’s -X.
-Birgi, God of Storytelling
+ Burning Inquiry + Underworld Breach, cast Burning Inquiry while Birgi, God of Storytelling
and Underworld Breach are on the field, escape Burning Inquiry with the generated by Birgi, God of Storytelling
as many times as needed to win with Jeska, Thrice Reborn’s -X.
-Brain Freeze + Lion's Eye Diamond + Underworld Breach, cast Brain Freeze while Lion's Eye Diamond and Underworld Breach are on the field and 3 cards are in your graveyard, cast Brain Freeze and target yourself, sacrifice Lion's Eye Diamond to add , escape Brain Freeze and DO NOT EXILE Lion's Eye Diamond targeting yourself, escape Lion's Eye Diamond and DO NOT EXILE Brain Freeze, repeat the process always adding and one your storm count is enough target other players with Brain Freeze.
-Dramatic Reversal + Isochron Scepter + open, cast Isochron Scepter imprinting Dramatic Reversal while you have at least 3 mana producing artefacts on the field, use to activate isochron sceptre and untap all artefacts, tap all mana producing artefacts and reuse isochron sceptre, repeat as many times as needed to win with Jeska, Thrice Reborn’s -X.
-Auriok Salvagers + Lion's Eye Diamond, while Auriok Salvagers is on the field, cast Lion's Eye Diamond and sac it for , use to activate Auriok Salvagers and get Lion's Eye Diamond on the field, repeat the process to have infinite that you can turn into infinite by repeating the loop and then win with Jeska, Thrice Reborn’s -X.
The stax package
Cards like Drannith Magistrate, Esper Sentinel, Ethersworn Canonist, Grand Abolisher, Ishai, Ojutai Dragonspeaker, Mystic Remora, Ranger-Captain of Eos, Rhystic Study, Silence, Smothering Tithe are great to slow down opponents while you assemble your winning combo, especially Ishai, Ojutai Dragonspeaker that can very quickly become big enough to swing and win with commander damage.
Recruiting
Auriok Salvagers and Sevinne's Reclamation lets you get your and CMC mana rocks, especially Lion's Eye Diamond (and Underworld Breach in the case of Sevinne's Reclamation) from the graveyard. Cards like Mystical Tutor lets you get Brain Freeze or a counter spell. Imperial Recruiter and Recruiter of the Guard gets you Dockside Extortionist from the deck. Muddle the Mixture offers great versatility as it can get Underworld Breach, Dockside Extortionist, Brain Freeze, Isochron Scepter and Dramatic Reversal from the deck. Enlightened Tutor can of course get you artefacts like Lion's Eye Diamond and enchantments like Underworld Breach. Gamble can be used to initiate the Brain Freeze + Lion's Eye Diamond + Underworld Breach combo with 6 cards in the graveyard while Brain Freeze and Lion's Eye Diamond are in the deck.
Extra value
Dockside Extortionist is a great target to flicker with cards like Chain of Vapor and Snap to generate lots of treasure.
Some considerations
Mox Diamond to replace Mox Amber, Gilded Drake to deal with problematic creatures, Homeward Path to deal with Gilded Drake and other steal effects, Wheel of Fortune to combo with Underworld Breach + Lion's Eye Diamond, Final Fortune + Spellseeker + Ephemerate to combo with Enlightened Tutor + Underworld Breach + Brain Freeze + Lion's Eye Diamond.