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This creature can't attack unless defending player controls an Island.

{5}{U}{U}: Monstrosity 3.

When this creature becomes monstrous, target land becomes an Island in addition to its other types.

5/5

Illustrated by Adam Paquette

Rulings (4)

Sep 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.

Sep 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.

Sep 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.

Sep 15, 2013

The effect making the land an Island doesn't have a duration and will last indefinitely. The land retains any land types and abilities it already had. An Island has the ability "{T}: Add {U}."

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Sealock Monster card artwork