Spymaster's Vault

Land

This land enters tapped unless you control a Swamp.
{T}: Add {B}.
{B}, {T}: Target creature you control connives X, where X is the number of creatures that died this turn. (Draw X cards, then discard X cards. Put a +1/+1 counter on that creature for each nonland card discarded this way.)

CMC
0
Mana cost
Color identity
B
Rarity
rare
Set
Modern Horizons 3 Promos
Price
EDHREC rank
#1154
Buy on TCGplayer
Spymaster's Vault card art
Spymaster's Vault puts a steady stream of cards into your graveyard while generating clue tokens — two resources on one permanent, at the cost of some setup to keep the discard flowing. In Oskar, Rubbish Reclaimer builds especially, that discard isn't a cost at all; it's the entire point.

Best Commanders

Commanders with the highest synergy

01
Oskar, Rubbish Reclaimer

Oskar, Rubbish Reclaimer

31.3% of decks · synergy 0.29

Oskar, Rubbish Reclaimer turns every discard from Spymaster's Vault into a free cast, so the vault functions as both an engine and a hand filter that pays for itself in permanents hitting the battlefield.

02
Maha, Its Feathers Night

Maha, Its Feathers Night

30.5% of decks · synergy 0.21

Maha, Its Feathers Night cares about cards leaving your hand and graveyard filling up, and Spymaster's Vault feeds both axes while the clue tokens provide mana-sink utility between cycles.

04
Xu-Ifit, Osteoharmonist

Xu-Ifit, Osteoharmonist

29.0% of decks · synergy 0.19

Xu-Ifit, Osteoharmonist rewards graveyard density and self-discard synergies, making Spymaster's Vault a natural fit that stocks the yard and generates artifact tokens for incidental payoffs.

05
Massacre Girl

Massacre Girl

27.5% of decks · synergy 0.18

Massacre Girl decks often lean on sacrifice and attrition loops, and Spymaster's Vault supplies clue tokens as fodder while steadily loading the graveyard for recursion or death-trigger payoffs.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander
legacy
modern
pioneer
standard
vintage
pauper
oathbreaker

Spymaster's Vault is legal in Commander, Legacy, Modern, Vintage, and Oathbreaker, but its home is Commander — the slower pace and 100-card graveyard-filling payoffs are exactly where a three-mana enchantment that trickles value is worth the slot. In Modern and Legacy, the effect is simply too slow; a three-mana enchantment with no immediate board impact doesn't survive the turn cycle long enough to generate meaningful returns in those formats. Oathbreaker shares the casual, multiplayer tempo of Commander, so the same graveyard and discard strategies that want Spymaster's Vault there translate cleanly.

Key Combos

Combo lines featuring this card

Price Context

Current price

unknown tier

Pricing data for Spymaster's Vault isn't available at the moment — check Scryfall or TCGPlayer for current market values. Given its niche appeal to specific graveyard and discard commanders, it tends to move with the demand of those archetypes rather than broad staple pricing.

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