High Seas
Enchantment
Red creature spells and green creature spells cost 
more to cast.
- CMC
- 3
- Mana cost
- Color identity
- U
- Rarity
- uncommon
- Set
- Mercadian Masques
- Price
- $0.20
- EDHREC rank
- #24189
High Seas taps all creatures without flying at the start of each player's untap step, turning the board into a permanent soft lock for anything that can't get airborne. At three mana for an enchantment, the setup cost is low enough that the taxing effect pays for itself the moment more than one opponent has ground creatures they need untapped.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | not legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
High Seas is a Commander card — the multiplayer table is where a global tap effect on every player's untap step compounds hardest, since three opponents' worth of locked ground creatures is a completely different proposition than one. In Legacy and Vintage it's legal but irrelevant; three mana for a conditional tapper has no competitive application in those formats when faster, more reliable disruption exists. Oathbreaker is the only other place it's worth a second look, and only in a dedicated flying or evasion shell where your creatures simply don't care about the downside.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.20 bulk tier
At $0.20, High Seas is deep bulk — a card you pick up in a trade binder or add to a cart to hit free shipping, not one you hunt down. That price is stable because demand is narrow: it fits a specific flying-matters or pirate-flavored Commander build and nothing else, so don't expect movement in either direction.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.