Sealock Monster

Creature — Octopus    (CMC:5)

Sealock Monster can't attack unless defending player controls an Island. : Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When Sealock Monster becomes monstrous, target land becomes an Island in addition to its other types.

042 DDO • ENAdam Paquette

™ & © 1993—2015 Wizards of the Coast

Legal in: Modern,Theros Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Singleton 100,Commander

Oracle Text (click to copy):

Sealock Monster {3}{U}{U} Creature — Octopus Sealock Monster can't attack unless defending player controls an Island. {5}{U}{U}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When Sealock Monster becomes monstrous, target land becomes an Island in addition to its other types. 5/5

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9/15/2013
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 “: Add  to your mana pool.”
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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