Not legal in Standard, Historic, Timeless, Alchemy, Brawl, Standard Brawl, Gladiator, Premodern, Pre-EDH, Old School
Notes & Rules Information
Once a creature becomes monstrous, it can't become monstrous again. If the creature is already monstrous when the monstrosity ability resolves, nothing happens.
(2014-04-26)
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.
(2014-04-26)
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.
