Swamp Mosquito

Creature — Insect

Flying
Whenever this creature attacks and isn't blocked, defending player gets a poison counter. (A player with ten or more poison counters loses the game.)

CMC
2
Mana cost
{1}{B}
Color identity
B
Rarity
common
Set
Alliances
Price
$0.14
EDHREC rank
#18563
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Swamp Mosquito card art
Swamp Mosquito exists to deal poison counters one at a time via a 1/1 flying body with swampwalk — the ceiling is poisoning one opponent to death across ten unblocked attacks, which is an enormous ask in any multiplayer game. It's a bulk common for a reason.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander
legacy
modern
pioneer
standard
vintage
pauper
oathbreaker

In Commander, Swamp Mosquito is technically a poison win condition, but the math is brutal: landing ten unblocked hits on a single target while three opponents are also advancing their boards is close to impossible without dedicated support. Legacy, Vintage, and Pauper all move too fast for a 1/1 that deals one poison counter per swing — infect made this strategy obsolete the moment it entered the game. Pauper poison decks have far more efficient vectors. Swamp Mosquito is legal in more formats than it's playable in any of them.

Key Combos

Combo lines featuring this card

Price Context

Current price

$0.14 bulk tier

At $0.14, Swamp Mosquito sits at the floor of bulk common pricing, and that's exactly where it belongs. There's no trajectory that makes this card worth more — it's a novelty pickup, not a staple.

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Mentioned

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