Seaside Citadel
Land
This land enters tapped.
: Add 
, 
, or 
.
- CMC
- 0
- Mana cost
- Color identity
- GUW
- Rarity
- uncommon
- Set
- Shards of Alara
- Price
- $1.06
- EDHREC rank
- #395
Seaside Citadel enters tapped, but it immediately pays for that cost by producing blue, green, or white — three colors from a single land slot, no mana investment required. In Ashling, the Limitless and any other Bant or tri-color shell, that consistency is worth the one-turn delay every time.
Best Commanders
Commanders with the highest synergy
Ashling, the Limitless
Ashling, the Limitless runs a Bant color identity that demands every reliable tri-land it can get, and Seaside Citadel delivers all three colors from one slot — smoothing out the early turns before Ashling hits the table.
Tidus, Yuna's Guardian
Tidus, Yuna's Guardian operates in blue-green-white and needs its mana base to function on curve; Seaside Citadel is an automatic inclusion at 72% adoption because it covers all three pips without asking anything in return.
Morska, Undersea Sleuth
Morska, Undersea Sleuth sits in the same Bant identity and leans on a tight mana base to fuel consistent activations — Seaside Citadel's tapped entry is a non-issue when the alternative is a colorless land or a two-color dual.
Ms. Bumbleflower
Ms. Bumbleflower runs blue, green, and white, and at 66% inclusion Seaside Citadel is essentially a staple — the tap drawback matters less in a slower, value-oriented shell where turn one is rarely make-or-break.
Kros, Defense Contractor
Kros, Defense Contractor needs all three Bant colors online to distribute counters and leverage its political engine, and Seaside Citadel plugs directly into that requirement without any additional setup.
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 Seaside Citadel does its best work — 100-card singleton decks punish greedy mana bases, and a land that reliably produces three colors for zero mana cost is a structural asset in any Bant, Sultai-adjacent, or other GWU shell. In Legacy and Vintage the card is legal but functionally irrelevant; those formats run fetch-shock packages that dwarf what a tapped tri-land offers, so Seaside Citadel never sees play there. Oathbreaker mirrors Commander's demand for multi-color consistency and the card slots in cleanly. The absence from Pioneer, Standard, and Pauper is either a reprint gap or format ban, but none of those formats would prioritize it anyway — it's a Commander card through and through.
Key Combos
Combo lines featuring this card
Price Context
Current price
$1.06 cheap tier
At $1.06, Seaside Citadel sits at the low end of the tri-land cycle — cheap enough that there's no reason to run a budget replacement instead. Price stability is high for a widely played staple with multiple reprints; don't expect it to spike or crash.
Explore
Sources
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.