Exile, Prosper v1.1.OTJ (EDH / Commander)

Synopsis

Prosper, Tome-Bound fuels a treasure subsidized, impulse draw, spell-sling engine, with several win-cons to hit as the deck goes off. Primarily, increasing ping damage lead by Marionette Master or Flaming Tyrannosaur + Mirkwood Bats, etc. Heartless Conscription can clear the way, or Revel in Riches can win outright.

Impulse draw, Treasure/Ramp

Storm-Kiln Artist - Treasure & ramp.
Birgi, God of Storytelling // Harnfel, Horn of Bounty - Birgi is huge ramp, Harnfel adds impulse, but Birgi is best.
Rose, Cutthroat Raider - Impulse, Ramp.
Xorn - Treasure boost.
Goldspan Dragon - Treasure, ramp.
Bonehoard Dracosaur - Impulse, treasure.
Wild-Magic Sorcerer - Impulse
Chandra, Torch of Defiance - Impulse + ramp.
Nalfeshnee - Doubles spells from exile.
Professional Face-Breaker - Treasure, impulse.
Plargg and Nassari - Impulse
Uba Mask - All card draw at the table becomes Impulse.
Urabrask, Heretic Praetor - Improved Uba Mask.
Gadrak, the Crown-Scourge - Mana effective flyer to hold the fort, easy to activate, makes treasure.
Grenzo, Havoc Raiser - Impulse
Decadent Dragon - Impulse, treasure.
Jeska's Will - Impulse, ramp.
Rain of Riches - Treasure + cascade.
Valakut Exploration - Impulse. Low to the ground.
Share the spoils - Asymmetrical group impulse (only you get paid).
Fevered Suspicion - Impulse + free cast & rebound.
Light Up the Stage - Impulse
Inspired Tinkering - Impulse, treasure.
Reckless Impulse - Impulse
Creative Technique - No ceiling Cascade.
Ignite the Future - Impulse
Throes of Chaos - Cascade + retrace. Repeatable trigger.
Commune with Lava - Impulse
Spinerock Knoll
Hidden Volcano
Hidden Necropolis

Interaction

Nahiri's Warcrafting - Spot removal + Impulse.
Poison the Cup - Foretell for Prosper trigger.
Volcanic Torrent - Cascade + Asymmetrical wipe.
Blood Money - Board wipe, potentially massive treasure upside.
Spiteful Banditry - Scalable board wipe + treasure.
Murderous Rider // Swift End - Removal, then cast Rider from exile for trigger.
Grim Hireling - Treasure, assassinate.
Cunning Rhetoric - Impulsive rattlesnake.
Author of Shadows
Shadow of the Enemy
Invasion of Karsus // Refraction Elemental - Board wipe that lets Prosper live, flips to amp your timmies.
Impending Flux - Asymmetrical wipe. Foretell to increase effect and trigger Prosper.
Hurl Through Hell
Bedevil
You Find Some Prisoners
Shinka, the Bloodsoaked Keep - Give Prosper first strike for insta-kills.
Fork - These last 3 can counter a counter or double your other spells.
Reverberate
Display of Power

Pay-offs & Win-cons

Mirkwood Bats
Nadier's Nightblade
Passionate Archaeologist
Invasion of Karsus // Refraction Elemental - Flips to amp your timmies.
Dragonspark Reactor
Marionette Master - Use the +1/+1 option on cast. Deals 4 dmg to target op upon each of your artifacts to graveyard (treasures).
Revel in Riches - Treasure, built-in win-con.
Flaming Tyrannosaurus
Heartless Conscription

Other Notes:

Treasure Vault - In conjunction w/ Revel in Riches - crack it before your upkeep to top up win-con.
Mines of Moria - Make use of graveyard to build-up treasure.

2 player vs multi-player tweaks:

For multi-player play: +Shiny Impetus, +Fevered Suspicion +Plargg and Nassari
For 1v1: +Case of the Burning Masks, +Shadow of the Enemy, +Bituminous Blast

Honorable Mentions

Apex of Power - You will have the mana to use this ahead of curve. Exile 7 cards to cast and +10 mana. Keep in mind, those 7 cards also pay you a treasure each when cast with Prosper out in play.
Chandra, Fire Artisan - +1: impulse 1, -7: impulse 7.
Etali, Primal Storm
Skyclave Relic - People will blow up artifacts to stop the treasure. This (these) are indestructible.
Stolen Strategy, Theater of Horrors, Outpost Siege - Additional impulse draw options.
Flameskull - Impulse draw on death, if a dud, you may recast Flameskull from exile instead. Reliable, recurring trigger.
Dire Fleet Daredevil
Breya's Apprentice
Gonti, Lord of Luxury
Laelia, the Blade Reforged - Strong but too easy to Rack up counters with Cascade and Discover.
Tibalt, Cosmic Impostor - Very strong in this build, but went with a Chandra.
Opposition Agent - Exile the results of opponent tutors, cast for trigger.
Chandra, Hope's Beacon - Impulse, ramp & double your spells (note: copies aren't coming from exile).