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Theme
Sealock Monster image 1 Sealock Monster image 2 Sealock Monster image 3
Duel Decks: Elspeth vs. Kiora (DDO | #42 | 2015-02-27)
Most recent print shown first. Tap image to zoom.

Sealock Monster

3UU
Creature — Octopus
Artist: Adam Paquette

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

5UU: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)

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

5/5
$0.06 cheapest print

Prices

Set # Treatment Finish Price (USD)
Duel Decks: Elspeth vs. Kiora 42 Regular Nonfoil $0.11
Theros 62 Regular Nonfoil $0.06
Theros 62 Regular Foil $0.41
The List DDO-42 Regular Nonfoil $0.20

Price History

View eBay Sold Listings See real sold prices for Sealock Monster

Rulings

2013-09-15 wotc
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}.”
2013-09-15 wotc
Once a creature becomes monstrous, it can't become monstrous again. If the creature is already monstrous when the monstrosity ability resolves, nothing happens.
2013-09-15 wotc
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.
2013-09-15 wotc
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.

Format Legality

Tlr Not Legal
Standard Not Legal
Future Not Legal
Historic Not Legal
Timeless Not Legal
Gladiator Not Legal
Pioneer Legal
Modern Legal
Legacy Legal
Pauper Not Legal
Vintage Legal
Penny Legal
Commander Legal
Oathbreaker Legal
Standardbrawl Not Legal
Brawl Not Legal
Alchemy Not Legal
Paupercommander Not Legal
Duel Legal
Oldschool Not Legal
Premodern Not Legal
Predh Not Legal