Swamp Mosquito

Creature — Insect    (CMC:2)

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

49 TSB • ENNicola Leonard

™ & © 1993—2006 Wizards of the Coast

Legal in: Modern,Time Spiral Block,Ice Age Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Singleton 100,Commander

Oracle Text (click to copy):

Swamp Mosquito {1}{B} Creature — Insect Flying Whenever Swamp Mosquito attacks and isn't blocked, defending player gets a poison counter. (A player with ten or more poison counters loses the game.) 0/1

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10/4/2004
Triggers immediately after blocking is declared if at that time no blockers are assigned to it.
4/15/2013
An ability that triggers when something "attacks and isn't blocked" triggers in the declare blockers step after blockers are declared if (1) that creature is attacking and (2) no creatures are declared to block it. It will trigger even if that creature was put onto the battlefield attacking rather than having been declared as an attacker in the declare attackers step.

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