Yu-Gi-Oh! · Speed Duel: Streets of Battle City
Fortress Whale's Oath
French name: Serment de la Baleine Forteresse
Fortress Whale's Oath (Speed Duel: Streets of Battle City SBC1-ENC17) has a market price of US$0.35 as of Nov 10, 2026.
Price guide
The market price on TCGplayer, in US dollars: a guide, not an offer.
Market price
As of Nov 10, 2026 · The market price is TCGplayer’s, in US dollars. It is a guide, not an offer.
Card details
- Type
- Spell Card
- Attribute
- SPELL
- Monster type
- Ritual
- Archetype
- Umi
Card text
This card is used to Ritual Summon "Fortress Whale". You must also Tribute monsters from your hand or field whose total Levels equal 7 or more.
About this card
Fortress Whale's Oath is card SBC1-ENC17 in Speed Duel: Streets of Battle City, a Yu-Gi-Oh! set released Aug 25, 2023. Rarity: Common. Finishes: 1st Edition. Reference market price on Nov 10, 2026: US$0.35. Over the last 30 days, the 1st Edition price went down 10.3%. Source: TCGplayer market data via tcgcsv.com, updated daily. A reference price is not an offer.
