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Harbinger of the Seas

{1}{U}{U}

Creature — Merfolk Wizard

MH3Modern Horizons 3#451rare
Extended Art

The rising moon calls mercilessly to the waves, commanding the sea to rise high enough to devour mountains.

Finishes
Nonfoil · Foil
Border
black
Security stamp
oval
Frame
2015
Illustrator
Winona Nelson
CommanderLegalModernLegalStandardNot legal
Format legality

Constructed

StandardNot legal
PioneerNot legal
ModernLegal
LegacyLegal
VintageLegal
PauperNot legal

Commander

CommanderLegal
Pauper CommanderNot legal
Duel CommanderLegal
PreDHNot legal
OathbreakerLegal
Tiny LeadersLegal

Arena

AlchemyNot legal
HistoricLegal
TimelessLegal
BrawlLegal
Standard BrawlNot legal
Competitive BrawlLegal
GladiatorLegal

Other

PremodernNot legal
Old SchoolNot legal
Penny DreadfulNot legal
Future StandardNot legal
Nonbasic lands are Islands.
2/2
Plays as:
Mass Land Denial
Market · per finishtrend updated 6h ago · prices as of Oct 15, 2026
$2.03 low$0.23 gap
$4.48 low-$1.52 gap
Cheapest playable copy$1.41· across 4 printings· view the cheapest printing ›

Price history

last 30 days · set by the window above · each finish on its own scale
Nonfoil$3.57-2.7%30D
30D range$3.52to$3.67Since May 2024:H $25.00L $2.48
Foil$5.68-5.8%30D1.59× nonfoil
30D range$5.63to$6.03Since May 2024:H $50.00L $5.21

Other printings

4 totalCompare all printings
Loading other printings

Found in

2 productsRounded odds
  • Modern Horizons 3 Collector Booster Pack

    Booster Pack · $86.29

    Nonfoil under 10%Foil under 1%
  • Modern Horizons 3 Collector Booster Sample Pack

    Booster Pack · $9.36

    Nonfoil under 1%Foil under 1%

Combos

Rulings

5 · latest Jun 7, 2024
  • WotCJun 7, 2024

    Harbinger of the Seas doesn't affect names or supertypes. It won't turn any land into a basic land or remove the legendary supertype from a legendary land, and the lands won't be named "Island."

  • WotCJun 7, 2024

    If Harbinger of the Seas loses its abilities, it continues to turn nonbasic lands into Islands. This is because effects that change subtypes are applied before considering effects that remove abilities, regardless of the order in which those effects started.

  • WotCJun 7, 2024

    If a nonbasic land has an ability that causes it to enter the battlefield tapped, it will lose that ability before it can apply. The same is also true of any other abilities that modify how a land enters the battlefield or apply "as" a land enters the battlefield, such as that of Vesuva or Cavern of Souls.

  • WotCJun 7, 2024

    If a nonbasic land has an ability that triggers "when" it enters the battlefield, it will lose that ability before it can trigger.

  • WotCJun 7, 2024

    Nonbasic lands lose any other land types and abilities they had. They gain the land type Island and gain the ability "{T}: Add {U}."