Sea Monster
Creature — Serpent
This creature can't attack unless defending player controls an Island.
- CMC
- 6
- Mana cost
- Color identity
- U
- Rarity
- common
- Set
- Seventh Edition
- Price
- $0.12
- EDHREC rank
- #27670
Sea Monster is a six-mana 6/6 with a conditional attack restriction — it can't attack unless you or an opponent controls an Island — which means it's dead weight in any meta without blue players at the table. There are strictly better vanilla or near-vanilla threats at this cost in virtually every format, and no deck should be running this over them.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | legal |
| oathbreaker | legal |
Sea Monster is legal in Commander, Legacy, Modern, Vintage, Pauper, and Oathbreaker, but legality and playability are different things. In Commander, the attack restriction is inconsistently punishing — fine at a table with blue players, a literal 0/0 in aggro-friendly pods with no Islands in sight. In Pauper, where every mana investment is scrutinized, a six-mana creature that can't reliably attack is far below the format's power floor. Legacy and Vintage have access to threats that win the game outright at lower costs, so Sea Monster never sees play there.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.12 bulk tier
At $0.12, Sea Monster is deep bulk — the kind of card that fills a common box and rarely leaves it. There's no competitive demand to push the price up, and it's been reprinted enough times that supply is essentially limitless.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.