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High Tide

Instant

Until end of turn, whenever a player taps an Island for mana, that player adds an additional {U}.

CMC
1
Mana cost
{U}
Color identity
U
Rarity
uncommon
Set
Dominaria Remastered
Price
$1.06
EDHREC rank
#814
Buy on TCGplayer
High Tide card art
High Tide doubles every Island's output for the turn — one mana in, suddenly your whole blue mana base produces twice as much, and with a way to flash it back like Archaeomancer the effect compounds into a full storm turn. It's a build-around, not a staple, but commanders like Zethi, Arcane Blademaster that can cast it repeatedly make it genuinely broken.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander legal
legacy legal
modern not legal
pioneer not legal
standard not legal
vintage legal
pauper banned
oathbreaker banned

High Tide carries two real restrictions: it only works on Islands, so any deck without a critical mass of basic Islands gets marginal returns, and the effect is a one-shot burst that requires either a combo shell or recursion to convert into a win. Legacy tolerates it because the format's blue combo decks run exactly that infrastructure. Commander gives it a pass for a different reason — singleton format normally punishes narrow cards, but High Tide is so explosive in the right shell that one copy is all you need, and blue's deep recursion toolkit makes that copy reusable. Pauper and Oathbreaker both ban it outright, which is the clearest signal that the card does something broken when conditions are met.

Best Commanders

Commanders with the highest synergy

01
Zethi, Arcane Blademaster

Zethi, Arcane Blademaster

62.3% of decks · synergy 0.60

Zethi, Arcane Blademaster imprints instants and recasts them for free on attack, which means High Tide isn't a one-time burst — it's a recurring engine that doubles your mana every combat step and eventually funds an unstoppable chain.

02
Geralf, the Fleshwright

Geralf, the Fleshwright

77.2% of decks · synergy 0.33

Geralf, the Fleshwright wants to cast spells repeatedly to generate zombie tokens, and High Tide lets a modest Island base fund several spells in a single turn, dramatically accelerating the token count and the damage clock.

03

Runo Stromkirk

29.7% of decks · synergy 0.27

Runo Stromkirk decks run enough Islands to make High Tide worthwhile, and the card's burst mana helps cast oversized sea creatures ahead of schedule or flip Runo's creature side on a turn where you'd otherwise fall one mana short.

04
Orvar, the All-Form

Orvar, the All-Form

68.2% of decks · synergy 0.24

Orvar, the All-Form triggers off targeting your own permanents, so High Tide pairs with cheap cantrips and copy effects to generate mana and board presence simultaneously — the Island doubling funds the spells that feed Orvar's ability.

Key Combos

Combo lines featuring this card

Price Context

Current price

$1.06 cheap tier

At $1.06, High Tide sits firmly in the cheap tier — genuine power at an entry-level price. It's a card with a long print history and wide availability, so there's no supply pressure to push it meaningfully higher.

Explore

Sources

Mentioned

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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.