Colosso de Ácros
Colossus of Akros
Defender, indestructible {10}: Monstrosity 10. (If this creature isn't monstrous, put ten +1/+1 counters on it and it becomes monstrous.) As long as this creature is monstrous, it has trample and can attack as though it didn't have defender.
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Preços da Cardmarket de 2026-10-19
Regras oficiais (4) · Scryfall
Monstrous isn't an ability that a creature has. It's just something true about that creature. If the creature stops being a creature or loses its abilities, it will continue to be monstrous.
Once a creature becomes monstrous, it can't become monstrous again. If the creature is already monstrous when the monstrosity ability resolves, nothing happens.
Colossus of Akros doesn't lose defender when it's monstrous. It's just able to attack.
An ability that triggers when a creature becomes monstrous won't trigger if that creature isn't on the battlefield when its monstrosity ability resolves.