港湾巨蛇 
Harbor Serpent
生物～巨蛇5/5
Printed (ZHS)
生物～巨蛇
海岛行者（只要防御牌手操控海岛，此生物就不能被阻挡。） 除非战场上有五个或更多海岛，否则港湾巨蛇不能攻击。
Oracle text (EN)
Creature — Serpent
Islandwalk (This creature can't be blocked as long as defending player controls an Island.) This creature can't attack unless there are five or more Islands on the battlefield.
Printing details
- Set
- M13 · 53
- Rarity
- Common
- Language
- ZHS
- Artist
- Daarken
- Released
- 2012-07-13
- Prices
- – · –
Price history
The trend shows with at least 7 days of history.
- Cardmarket, trend
- CardTrader, Near Mint minimum (ZHS)
The history starts on October 28, 2026 and grows every day.
Show the data
| Date | Cardmarket, trend | CardTrader, Near Mint minimum (ZHS) |
|---|---|---|
| October 30, 2026 | €0.09 | €0.64 |
| October 28, 2026 | €0.10 | €0.64 |
Prices
| Source | Non-foil | Foil |
|---|---|---|
| Cardmarket | low €0.02 trend €0.09 30-day avg €0.06 | low €0.09 trend €0.27 30-day avg €0.24 |
| CardTrader (ZHS) | NM from €0.64 with Zero from €0.64 | NM from – |
| CardTrader (any language) | NM from €0.11 | NM from €0.25 |
Cardmarket updated Nov 2, 2026 · CardTrader updated Nov 2, 2026
Buy and look up
Legality
- standard Not legal
- pioneer Not legal
- modern Legal
- legacy Legal
- vintage Legal
- commander Legal
- pauper Legal
- alchemy Not legal
- brawl Not legal
- competitivebrawl Not legal
- duel Legal
- future Not legal
- gladiator Not legal
- historic Not legal
- oathbreaker Legal
- oldschool Not legal
- paupercommander Legal
- penny Legal
- predh Legal
- premodern Not legal
- standardbrawl Not legal
- timeless Not legal
- tlr Not legal
Rulings
-
The second ability checks how many Islands are on the battlefield (regardless of who controls them) only as attackers are declared. Once Harbor Serpent is declared as an attacker, it will continue to attack even if the number of Islands on the battlefield falls below five.
-
Harbor Serpent's abilities care about lands with the land type Island, not necessarily lands named Island.