Harbor Serpent
Creature — Serpent
M12Magic 2012#56common
Foil
Like most giant monsters villagers worship as gods, it proves a fickle master.
- Border
- black
- Frame
- 2003
- Pull rate
- about 1 per booster–1 in 896
- Illustrator
- Daarken
- Found in
- 2012 Core Set MTGO Redemption Foil · 2012 Core Set MTGO Redemption · 2 more
CommanderLegalModernLegalStandardNot legal
Format legality
AlchemyNot legal
BrawlNot legal
CommanderLegal
Competitive BrawlNot legal
DuelLegal
Future StandardNot legal
GladiatorNot legal
HistoricNot legal
LegacyLegal
ModernLegal
OathbreakerLegal
Old SchoolNot legal
PauperLegal
Pauper CommanderLegal
PennyLegal
PioneerNot legal
PreDHLegal
PremodernNot legal
StandardNot legal
Standard BrawlNot legal
TimelessNot legal
Tiny LeadersNot legal
VintageLegal
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.
5/5Islandwalk
Market · per finishspark updated 13h ago · prices as of 2026-07-12
Nonfoil+0.0%
$0.08
$0.01 low$0.00 gap
Foil+0.0%
$0.23
$0.09 low$0.01 gap
Finish
Market
Δ 7D · Trend
Low
Buylist
Buy / Sell Gap
Nonfoil
$0.08as of 2026-07-12
+0.0%
H $0.09L $0.02since Feb 2024$0.01
$0.01
$0.000% · normal spread
VenuesHide venues
Low: tcgplayer
Buylist: cardkingdom
Foil
$0.23as of 2026-07-12
+0.0%
H $0.49L $0.08since Feb 2024$0.09
$0.08
$0.01+11% · normal spread
VenuesHide venues
Low: tcgplayer
Buylist: cardkingdom
Cheapest playable copy$0.08· across 3 printings
Rulings
2 · latest Aug 15, 2010 · one tap opens all
- WotCAug 15, 2010
Harbor Serpent's abilities care about lands with the land type Island, not necessarily lands named Island.
- WotCAug 15, 2010
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.