Deep Sea Sentry (MP21-EN050) is a Level 2 WATER Deep Sea Effect Monster from the 2021 Tin of Ancient Battles. Build your aquatic archetypes with this essential Yu-Gi-Oh! card.
2021 • Yu-Gi-Oh! • 2021 Tin of Ancient Battles
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| Condition | Value | Source | Trend | Price Details |
|---|---|---|---|---|
$0.89 | Guide Estimate | 0% | ||
Raw / Ungraded
TCGplayer Market (reference) · Guide Estimate evidence · captured Oct 26, 2026
The Deep Sea Sentry card (MP21-EN050) is a key component for players building WATER attribute decks in the Yu-Gi-Oh! Trading Card Game. Released as part of the 2021 Tin of Ancient Battles, this Common rarity card belongs to the Deep Sea archetype, a popular family of Sea Serpent monsters known for their synergy and strategic flexibility. As a Level 2 Effect Monster, Deep Sea Sentry offers a low-cost summoning option that helps players establish board presence early in the game without sacrificing valuable resources. Collectors and duelists alike appreciate the Deep Sea Sentry card for its reliable archetype support. Its inclusion in the 2021 Tin of Ancient Battles makes it a staple for those looking to complete their set collections or expand their competitive decks. The card's WATER attribute and Sea Serpent type allow it to link seamlessly with other Deep Sea monsters, creating powerful combo potential for players who specialize in aquatic strategies. Whether you are a seasoned collector or just starting your Yu-Gi-Oh! Journey, Deep Sea Sentry is a versatile addition to any card binder. Explore our inventory to discover more cards from this exciting set and beyond.
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The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
The core identity of the card within the set.
The subject, team, league, and sport context tied to this card.
Featured
Deep Sea Sentry
Game
Yu-Gi-Oh!
Rarity, print treatment, and game-specific stats for this card.
Common
Card Stock
English
Water
Sea Serpent
2
400 / 2000
Deep Sea
Abilities, attacks, oracle text, and flavor text printed on the card.
If this card is sent to the GY to activate a WATER monster's effect: You can make your opponent banish 1 card from their hand face-up, until the End Phase. If this card is Special Summoned: You can send the top 2 cards of your Deck to the GY, then target 1 Level 4 or lower WATER monster in your GY, except "Deep Sea Sentry"; add it to your hand. You can only use each effect of "Deep Sea Sentry" once per turn.
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