Wildfire Cerberus | Magic: The Gathering
Formats Wildfire Cerberus is Legal in
Official Oracle Text for Wildfire Cerberus
When Wildfire Cerberus becomes monstrous, it deals 2 damage to each opponent and each creature your opponents control.
Official Rulings for Wildfire Cerberus
4/26/2014 : 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.
4/26/2014 : 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.