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Sign in Blood

Sorcery

Target player draws two cards and loses 2 life.

CMC
2
Mana cost
{B}{B}
Color identity
B
Rarity
common
Set
Commander 2011
Price
$0.44
EDHREC rank
#229
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Sign in Blood card art
Sign in Blood draws two cards for two mana and two life — that's the whole deal, and at instant-adjacent sorcery speed it's one of black's most efficient raw-card-advantage pieces. Sheoldred, the Apocalypse turns the life payment into a net positive, and Spellweaver Helix can staple it to every other instant or sorcery you cast, making it a combo enabler on top of a workhorse.

Best Commanders

Commanders with the highest synergy

01
Sheoldred, the Apocalypse

Sheoldred, the Apocalypse

71.5% of decks · synergy 0.36

Sheoldred, the Apocalypse flips Sign in Blood's two-life cost into a gain — you draw two, Sheoldred triggers twice for four life, netting two life on a two-mana draw-two, which is absurd value. At 71% inclusion across 11,000-plus Sheoldred decks, it's essentially an auto-include.

02

Kuja, Genome Sorcerer

56.4% of decks · synergy 0.33

Kuja, Genome Sorcerer cares about copying and chaining spells, and Sign in Blood is a cheap, repeatable spell that keeps the hand full for Kuja's triggers to feed on. Over half of Kuja decks run it precisely because consistent card flow at two mana never goes dry.

03
Judith, Carnage Connoisseur

Judith, Carnage Connoisseur

54.1% of decks · synergy 0.31

Judith, Carnage Connoisseur wants to spend mana on cheap spells that keep the engine churning, and Sign in Blood fills that role while also being a legitimate win condition when pointed at an opponent on low life. The 54% inclusion rate reflects how naturally it slots into Judith's punisher strategy.

04
Black Waltz No. 3

Black Waltz No. 3

52.3% of decks · synergy 0.29

Black Waltz No. 3 leans on instants and sorceries to fuel its abilities, and Sign in Blood is exactly the kind of low-cost spell that keeps the stack busy and the hand stocked. The synergy score of 0.29 signals that players building around Black Waltz No. 3 identify it as a structural piece, not just a filler draw spell.

05
Tor Wauki the Younger

Tor Wauki the Younger

51.2% of decks · synergy 0.28

Tor Wauki the Younger pings opponents whenever you cast instants or sorceries, so Sign in Blood becomes draw two, deal one — and if you point it at an opponent, it's draw two, deal three in total. That dual function as card draw and reach is why it shows up in over half of Tor Wauki the Younger decks.

Format Analysis

Where it lives, where it can’t

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

Sign in Blood is a Commander staple first and a constructed role-player second. In Commander, the ability to target any player turns a two-mana draw spell into a finisher when an opponent is at two life — that dual function is rare and valuable at this cost. In Pauper, it's a foundational black draw spell, competing primarily on consistency in controlling and midrange shells. Modern and Pioneer have enough premium draw options that Sign in Blood sits near the fringe, mostly appearing in budget builds or dedicated black-devotion strategies where the double-black pip actually helps. Legacy and Vintage have enough broken cantrips and card advantage that Sign in Blood rarely makes the cut outside of Pauper-adjacent cubes.

Key Combos

Combo lines featuring this card

Price Context

Current price

$0.44 bulk tier

At $0.44, Sign in Blood is deep bulk — it's been printed enough times that the price floor is essentially zero, and it won't climb. Grab copies without hesitation; there's no meaningful downside to owning multiples.

Explore

Sources

Mentioned

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