Castle Sengir
Land
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- CMC
- 0
- Mana cost
- Color identity
- BRU
- Rarity
- uncommon
- Set
- Homelands
- Price
- $0.26
- EDHREC rank
- #25472
Castle Sengir enters untapped if you control a Swamp, then spends three mana to put a +1/+1 counter on a creature — a useful but slow effect stapled to a land that costs you nothing in tempo when your mana base supports it. It's a fine inclusion in any black-heavy Commander deck that wants a mana sink, but it doesn't belong in two- or three-color decks where hitting untapped is unreliable.
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 |
Castle Sengir is a Commander card through and through — the sink ability is too slow and low-impact for Legacy or Vintage, where it sees essentially no play despite being legal. In Commander, any mono-black or heavily black deck can reliably enter it untapped, and the +1/+1 counter ability converts spare mana in the late game into incremental pressure, which matters most in go-wide or aristocrats builds that want to grow a threat over several turns. Oathbreaker is the same story as Commander at a smaller scale: fine if you're black-dense, irrelevant if you're not. Anywhere Castle Sengir costs you an untapped land with any frequency, cut it for a basic.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.26 bulk tier
At $0.26, Castle Sengir is firmly bulk — you're essentially getting a free upgrade over a basic Swamp in the right deck. Bulk lands with conditional utility don't typically spike, so there's no urgency either way; pick it up whenever and don't think twice about it.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.