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Chamber Sentry

{X}

Artifact Creature — Construct

GRNGuilds of Ravnica#232rare
Foil
Border
black
Security stamp
oval
Frame
2015
Pull rate
about 1 per booster–1 in 1793
Illustrator
Adam Paquette
Found in
Guilds of Ravnica MTGO Redemption Foil · Guilds of Ravnica MTGO Redemption · Guilds of Ravnica Booster Pack
Printings2CombosIn 32
CommanderLegalModernLegalStandardNot legal
Format legality
AlchemyNot legal
BrawlLegal
CommanderLegal
Competitive BrawlLegal
DuelLegal
Future StandardNot legal
GladiatorLegal
HistoricLegal
LegacyLegal
ModernLegal
OathbreakerLegal
Old SchoolNot legal
PauperNot legal
Pauper CommanderNot legal
PennyLegal
PioneerLegal
PreDHNot legal
PremodernNot legal
StandardNot legal
Standard BrawlNot legal
TimelessLegal
Tiny LeadersLegal
VintageLegal
This creature enters with a +1/+1 counter on it for each color of mana spent to cast it. {X}, {T}, Remove X +1/+1 counters from this creature: It deals X damage to any target. {W}{U}{B}{R}{G}: Return this card from your graveyard to your hand.
0/0

Plays as: Color Matters · Counter Payoff · Counter Placer · Recursion · Mana Sink · Planeswalker Removal · Fodder · Damage Win · X Spell

Market · per finishspark updated 11h ago · prices as of 2026-07-12
Nonfoil+0.0%
$0.23
$0.01 low-$0.02 gap
Foil+0.0%
$0.47
$0.15 low$0.05 gap
Cheapest playable copy$0.15· across 2 printings

Rulings

6 · latest Oct 5, 2018 · one tap opens all
  • WotCOct 5, 2018

    Colorless mana won't give Chamber Sentry another +1/+1 counter. Colorless is not a color.

  • WotCOct 5, 2018

    If Chamber Sentry enters the battlefield without being cast, it receives no +1/+1 counters.

  • WotCOct 5, 2018

    If an effect allows you to spend mana as though it were mana of any color to cast Chamber Sentry, you consider only the actual mana spent to determine how many counters it receives.

  • WotCOct 5, 2018

    If another creature enters the battlefield as a copy of Chamber Sentry, consider what mana was spent to cast that creature to determine how many +1/+1 counters it enters with.

  • WotCOct 5, 2018

    The value of X chosen when you activate Chamber Sentry's first activated ability doesn't have to be the same value of X that you chose when you cast it.

  • WotCOct 5, 2018

    You can choose any value for X as you cast Chamber Sentry. The value chosen for X doesn't directly affect the number of +1/+1 counters Chamber Sentry enters the battlefield with, but it does let you pay more mana and thus spend more colors of mana to cast it.