Legendary Creature — Tiefling Warlock

Prosper, Tome-Bound

Mana value4EDHREC#2,225

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The Commander

Deathtouch

Mystic Arcanum — At the beginning of your end step, exile the top card of your library. Until the end of your next turn, you may play that card.

Pact Boon — Whenever you play a card from exile, create a Treasure token.

Guide

Gameplan

Prosper turns your library into a perpetual card-advantage engine, exiling a card each end step you can play next turn while spawning Treasure every time you cast from exile. You ramp aggressively with those Treasures, flood the board with impulse-draw value, and convert that surplus into either a big mana payoff, an aristocrats drain, or a combo finish.

Strengths

Relentless card advantage and Treasure generation that snowballs every turn cycle
Synergizes with the deep pool of red impulse-draw effects to multiply triggers
Deathtouch makes Prosper a respectable blocker and political deterrent
Treasure ramp enables explosive turns and supports artifact/sacrifice subthemes
Self-sufficient engine that grinds well against attrition decks

Weaknesses

Heavily commander-dependent; recasting Prosper repeatedly gets expensive
Engine is slow to close games without a dedicated payoff or combo
Vulnerable to graveyard/exile hate and Treasure-token wipes
Two colors limit interaction (few clean answers to enchantments/artifacts)
Can durdle and generate value without an actual board presence to win

Key Cards

Glint-Horn Buccaneer — Drains every opponent for each card you play from exile, turning Prosper's impulse draws into a steady damage clock.
Storm-Kiln Artist — Makes Treasures off every spell, accelerating mana and combo loops alongside Prosper's own Treasure triggers.
Birgi, God of Storytelling — Adds mana each cast, fueling chains of exile-cast spells that snowball into huge turns.
Underworld Breach — With Treasures and an outlet like Lightning Crafter or Brain Freeze, it enables a game-ending combo finish.
Bag of Holding — Recurs discarded cards and stacks value with Prosper's exile draws and Treasure-fueled looting.
Dockside Extortionist — Explosive Treasure generation that turbocharges Prosper's mana and artifact payoffs.

Upgrade Path

Tighten the engine with cheap impulse-draw and cost reducers (Birgi, Storm-Kiln Artist, Sol Ring, fast mana) and add a dedicated combo line like Underworld Breach + Brain Freeze or Lightning Crafter loops. Replace win-more value cards with tutors (Gamble, Vampiric Tutor) and consistent payoffs (Glint-Horn Buccaneer, Bag of Holding) so Treasures convert directly into wins. Upgrade the mana base with dual lands and fast mana to deploy Prosper and protect the engine earlier.

Core Cards

From 1 Mythicwyrm deck.

Win Conditions

▸Incremental drain via Glint-Horn Buccaneer, Reckless Fireweaver, or Mayhem Devil triggers
▸Underworld Breach or storm-style combo loop for an explosive single-turn kill
▸Big mana payoffs like Torment of Hailfire or a Treasure-fueled X-spell
▸Beatdown with deathtouch Prosper plus value creatures while opponents fall behind

Archetypes

Spellslinger / Impulse Draw — Prosper rewards casting cards from exile, pairing perfectly with red's impulse-draw suite for repeated Treasure and damage triggers.
Artifacts / Treasure — Constant Treasure tokens feed artifact synergies, sacrifice payoffs, and big mana plays.
Aristocrats — Treasures and exiled creatures give fodder for sacrifice engines and drain effects.
Storm / Combo — Treasure mana plus cast-triggers enable Underworld Breach and ritual-driven combo kills.