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Chamber Sentry

Artifact Creature — Construct

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.

CMC
0
Mana cost
{X}
Color identity
BGRUW
Rarity
rare
Set
Guilds of Ravnica
Price
$0.21
EDHREC rank
#24262
Buy on TCGplayer
Chamber Sentry card art
Chamber Sentry enters with X +1/+1 counters for each color you spent casting it, then lets you pay {<span class="card-name deferred">X</span>} and remove X counters to ping for X damage — repeated, activated removal stapled to a body. Rocksteady, Mutant Marauder and other multicolor-counter commanders push Chamber Sentry from a flexible beater into a genuine engine piece.

Format Analysis

Where it lives, where it can’t

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

Commander is where Chamber Sentry does its best work — five-color and multicolor-matters decks can drop it for five or more counters, making the ping activation immediately threatening. In Modern and Pioneer it's a niche pick at best, too slow and mana-intensive for formats that demand faster bodies. Legacy and Vintage have no interest; the payoff requires substantial mana investment that those formats punish. Chamber Sentry is a Commander card through and through.

Key Combos

Combo lines featuring this card

Price Context

Current price

$0.21 bulk tier

At $0.21, Chamber Sentry is deep bulk — easy to pick up as a throw-in or cheap order filler. It's unlikely to spike unless a breakout multicolor-counter commander drives sustained demand, so grab it now if the deck calls for it and don't worry about the price moving.

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Sources

Mentioned

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