Oracle

Artifact Creature - Golem 10 / 10

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 Colossus of Akros is monstrous, it has trample and can attack as though it didn't have defender.

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

9/15/2013
Colossus of Akros doesn’t lose defender when it’s monstrous. It’s just able to attack.

9/15/2013
Once a creature becomes monstrous, it can’t become monstrous again. If the creature is already monstrous when the monstrosity ability resolves, nothing happens.

9/15/2013
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.

9/15/2013
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.

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