DDO #42
Viewing
Sealock Monster
Creature · OctopusMonstrosity
Nonfoil
TCGplayer market · DDO #42 nonfoil
$0.10 +42.9% +$0.03, 7 days
- 1-year range
- 30 days
- 0.0%
- EDHREC rank
- #23,220 Down 167 in 30 days
- Best buylist
Buy DDO #42 nonfoil
TCGplayer, $0.10 (opens in a new tab) Card Kingdom, (opens in a new tab) Mana Pool, (opens in a new tab) eBay, Check price (opens in a new tab)
Affiliate links. TCG Strat may earn a commission from TCGplayer, Mana Pool and eBay. Prices are TCGplayer’s market price, Card Kingdom’s retail price and Mana Pool’s lowest listing.
Sealock Monster Price Summary
The benchmark price (cheapest playable nonfoil) is $0.10, up 42.9% over 7 days, flat over 30 days, down 58.3% over 90 days.
Sealock Monster Price History
Markets TCGplayer marketreference
Drag across the chart Tap or drag the chart
TCGplayer market
Card Kingdom retail
Card Kingdom buylist
Mana Pool, lowest listing
Cardmarket trend
TCGplayer change, 1 year
Low in range
High in range
Buylist spread
Markets shown
Cardmarket is quoted in euros. Its line is drawn at the dollar equivalent.
Reprints in this period
Sealock Monster price history chart, default range 3 months. currently $0.10.
Where to Buy and Sell Sealock Monster
Every market we track for DDO #42 nonfoil on one line. The gray band is what you give up selling to a store instead of buying at market.
Sealock Monster in Sealed Products
Checking which sealed products hold DDO #42 nonfoil.
Loading sealed products.
Sealock Monster Printings & Prices
Sealock Monster has 3 tracked printings across 3 sets, in nonfoil and foil finishes.
THS #62
PLST #DDO-42
Sell Sealock Monster: Buylist Offers
| Buyer | Printing | Finish | Cash offer | Market | Spread to market |
|---|---|---|---|---|---|
| Card Kingdom | THS #62 | Foil | |||
| Card Kingdom | THS #62 | Nonfoil | |||
| Card Kingdom | PLST #DDO-42 | Nonfoil | |||
| Card Kingdom | DDO #42 | Nonfoil |
Sealock Monster Rules Text & Legality
Sealock Monster
This creature 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 this creature becomes monstrous, target land becomes an Island in addition to its other types.
Sealock Monster is legal in Pioneer, Modern, Legacy and Commander, and not legal in Standard and Pauper.
- CommanderLegal
- Duel CommanderLegal
- LegacyLegal
- ModernLegal
- OathbreakerLegal
- Penny DreadfulLegal
- PioneerLegal
- VintageLegal
- AlchemyNot legal
- BrawlNot legal
- Competitive BrawlNot legal
- Future StandardNot legal
- GladiatorNot legal
- HistoricNot legal
- Old SchoolNot legal
- PauperNot legal
- Pauper CommanderNot legal
- PreDHNot legal
- PremodernNot legal
- StandardNot legal
- Standard BrawlNot legal
- TimelessNot legal
Sealock Monster Rulings
- 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}.”
Reprints & Reprint Risk
Sealock Monster has been reprinted 4 times.
- Sep 27, 2013TherosTHS #62
- Sep 27, 2013Theros · foilTHS #62
- Feb 27, 2015Duel Decks: Elspeth vs. KioraDDO #42
- Apr 29, 2022The ListPLST #DDO-42
Sealock Monster in Commander
Sealock Monster is the #23,220 most-played card on EDHREC, down 167 places over the last 30 days.
#23,220
EDHREC rank
across all Commander decks Down 167 in 30 days
across all Commander decks Down 167 in 30 days
Sealock Monster FAQ
How much is Sealock Monster worth?
Sealock Monster is worth about $0.10 for its cheapest playable printing as of Nov 9, 2026.
Is Sealock Monster legal in Commander?
Yes. Sealock Monster is legal in Commander. It is also legal in Pioneer, Modern and Legacy.
Has Sealock Monster been reprinted?
Yes. Sealock Monster has been reprinted 4 times, with 3 printings tracked on The Index.
Why is Sealock Monster cheap?
Sealock Monster trades at about $0.10; 4 reprints keep supply plentiful, and Commander demand is modest (#23,220 on EDHREC).