Harbinger of the Seas
Creature — Merfolk Wizard
Nonbasic lands are Islands.
- CMC
- 3
- Mana cost
- Color identity
- U
- Rarity
- mythic
- Set
- Marvel Universe
- Price
- —
- EDHREC rank
- #3611
Harbinger of the Seas turns every nonbasic land on the board into an Island — a three-mana Merfolk that does more to dismantle mana bases than Choke ever could, because it sticks around as a body and hits everyone including you. The cost is real: your own nonbasics become Islands too, so running it without a heavily basic land base or an Island-synergy payoff like Hakbal of the Surging Soul is self-inflicted damage.
Best Commanders
Commanders with the highest synergy
Hakbal of the Surging Soul
Hakbal of the Surging Soul builds around Merfolk submerging lands for value, and Harbinger of the Seas converts every opponent's nonbasic into an Island — exactly what Hakbal wants to count and exploit while neutering enemy mana simultaneously.
Kumena, Tyrant of Orazca
Kumena, Tyrant of Orazca wants a critical mass of Merfolk, and Harbinger of the Seas pulls double duty as a relevant tribal body that answers greedy three- and four-color mana bases before opponents can develop their game plan.
Azami, Lady of Scrolls
Azami, Lady of Scrolls cares about Wizards, but Harbinger of the Seas earns its slot here as a Merfolk that cripples nonbasic-reliant opponents — slowing the table down while Azami's card-draw engine snowballs uninterrupted.
Eluge, the Shoreless Sea
Eluge, the Shoreless Sea rewards Island-heavy lists, and Harbinger of the Seas converts opponents' nonbasics into Islands it can potentially interact with — turning enemy lands into resources Eluge can leverage.
Xolatoyac, the Smiling Flood
Xolatoyac, the Smiling Flood benefits from flooding the board with Islands both literally and figuratively, and Harbinger of the Seas delivers that effect on a Merfolk body the moment it enters, synergizing with every Island-count payoff in the deck.
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 | not legal |
| oathbreaker | legal |
Commander is where Harbinger of the Seas does its most devastating work — four-color mana bases stuffed with shock lands and fetch lands are ubiquitous, and a resolved Harbinger effectively strips everyone of colored mana they aren't paying with basic Islands. In Legacy and Vintage, the effect is real but narrow: those formats move fast enough that a 2/2 body for three rarely survives to punish the opponent, and dedicated prison decks have tighter options available. Modern is the most interesting non-Commander case — it's legal and the nonbasic-heavy meta means Harbinger of the Seas can generate immediate advantage, though it competes with faster disruption and dies to nearly every removal spell in the format. Oathbreaker mirrors Commander's appeal at smaller deck size, and blue-heavy spellslinger builds there can weaponize it effectively.
Key Combos
Combo lines featuring this card
Harbinger of the SeasChoke
Nonbasic lands do not untap; Lock; Mass Land Denial
View on Commander Spellbook ↗
Harbinger of the SeasCurse of Marit Lage
Nonbasic lands do not untap; Lock; Mass Land Denial
View on Commander Spellbook ↗Price Context
Current price
unknown tier
Pricing data for Harbinger of the Seas isn't currently available in the system, so check Scryfall or TCGPlayer for the live number before purchasing. Given its 34% inclusion rate in Hakbal of the Surging Soul decks alone and clear demand across multiple blue tribal archetypes, it's worth picking up at any price that feels reasonable to your budget rather than waiting.
Explore
Sources
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.