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Prosper, Tome-Bound

Legendary Creature — Tiefling Warlock

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.

CMC
4
Mana cost
{2}{B}{R}
Color identity
BR
Rarity
mythic
Set
Forgotten Realms Commander
Price
—
EDHREC rank
#2217
Buy on TCGplayer
Prosper, Tome-Bound card art
Prosper, Tome-Bound generates a Treasure every end step you cast a spell from exile, turning impulse draw into mana acceleration — the value loop starts the turn he lands. He slots cleanly alongside Birgi, God of Storytelling // Harnfel, Horn of Bounty for storm-style chains and shares a home with Ob Nixilis, Captive Kingpin wherever draining opponents one life at a time is the plan.

Best Commanders

Commanders with the highest synergy

01
Ob Nixilis, Captive Kingpin

Ob Nixilis, Captive Kingpin

72.5% of decks · synergy 0.66

Ob Nixilis, Captive Kingpin triggers whenever opponents lose exactly one life, and every Treasure Prosper, Tome-Bound creates can be cracked to fuel a spell that does exactly that — the two cards form a self-reinforcing drain loop that ends games.

02
Fire Lord Zuko

Fire Lord Zuko

59.5% of decks · synergy 0.56

Fire Lord Zuko cares about casting spells from exile, which is precisely the condition Prosper, Tome-Bound rewards — every impulse draw Zuko facilitates feeds back into Prosper's Treasure engine.

04
Laughing Jasper Flint

Laughing Jasper Flint

51.7% of decks · synergy 0.45

Laughing Jasper Flint exiles cards from opponents' libraries and lets you cast them, triggering Prosper, Tome-Bound's Treasure clause on spells you didn't even pay for — the synergy is nearly free value on top of Jasper's own plan.

05
Abaddon the Despoiler

Abaddon the Despoiler

37.7% of decks · synergy 0.36

Abaddon the Despoiler rewards cascade-heavy storm turns, and Prosper, Tome-Bound's Treasure production helps fund the mana needed to chain spells deep enough to make cascade triggers count.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander legal
legacy legal
modern not legal
pioneer not legal
standard not legal
vintage legal
pauper not legal
oathbreaker legal

Commander is where Prosper, Tome-Bound lives — a four-mana legendary with a passive value engine and an end-step trigger is exactly the kind of card that thrives in long, multiplayer games where you have multiple opponents to drain and multiple turns to accumulate Treasures. He's legal in Legacy and Vintage as well, but neither format has any use for a four-mana creature that generates incremental advantage over several turns when faster, more linear options dominate. Oathbreaker is a reasonable home if you're pairing him with a burn-from-exile planeswalker signature spell, though the 20-life starting total compresses his drain clock significantly. Outside of Commander, don't bother.

Key Combos

Combo lines featuring this card

Price Context

Current price

unknown tier

Prosper, Tome-Bound doesn't have a current price on record here, so check Scryfall or TCGPlayer for the live number before buying. He was originally printed as a precon commander, which historically keeps prices accessible even as demand grows — but verify before assuming budget.

Explore

Sources

Mentioned

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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.