Criatura — Insecto
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Vuela.
Cuando la Avispa de la fundición entre al campo de batalla, si controlas una criatura con un contador +1/+1 sobre ella, las criaturas que controlan tus oponentes obtienen -1/-1 hasta el final del turno.
If you don’t control a creature with a +1/+1 counter as Foundry Hornet enters the battlefield, its ability doesn’t trigger, even if you can give a +1/+1 counter to a creature right away. If you control no creatures with a +1/+1 counter as the ability resolves, nothing happens.