Rin and Seri, Inseparable
Core Set 2021 · #278

Rin and Seri, Inseparable

Rin and Seri, Inseparable is a Mythic Legendary Creature — Dog Cat from Core Set 2021 (278) in Magic: The Gathering. Mana cost {1}{R}{G}{W}. Color identity: G, R, W. Cactaur's latest catalog snapshot shows a market reference near $35.55 for ungraded copies.

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TCGPlayer market $35.55
Cardmarket trend €6.75
Rarity Mythic
App coming soon

Who is this card for?

Rin and Seri, Inseparable suits collectors and players working on Core Set 2021 who need the Mythic slot. Treat $35.55 as a starting reference only — verify finish, border treatment, and condition before paying premium singles prices.

What is Rin and Seri, Inseparable from Core Set 2021?

Rin and Seri, Inseparable is a Legendary Creature — Dog Cat in Core Set 2021 numbered 278. Mana cost {1}{R}{G}{W}. Color identity: G, R, W. Rin and Seri, Inseparable (278) is a chase-tier Mythic Legendary Creature — Dog Cat in Core Set 2021. Finish, border treatment, and grade drive most of the premium beyond raw near-mint quotes.

What is Rin and Seri, Inseparable worth today?

Cactaur tracks a market reference near $35.55 for Rin and Seri, Inseparable. Low and high spread runs $35.55 to null. Per-finish references: cardmarket: $6.75; foil: $35.55; Normal: $31.88. This printing is from Core Set 2021. Collector number 278 distinguishes this printing from same-name cards in other sets.

SetCore Set 2021
Number278
RarityMythic
TCGPlayer USD$35.55
Cardmarket EUR€6.75
cardmarket $6.75
foil $35.55
Normal $31.88

Card stats

ColorsG, R, W
Power4

How collectible is Rin and Seri, Inseparable?

Rin and Seri, Inseparable is a Mythic printing in Core Set 2021. Chase-tier slots combine scarcity, art, and format demand — prices move with reprint news and tournament results. This printing is from Core Set 2021. Collector number 278 distinguishes this printing from same-name cards in other sets.

What are the key details for Rin and Seri, Inseparable?

Rin and Seri, Inseparable lists as Legendary Creature — Dog Cat. Artist: Leesha Hannigan. Rules text is indexed in the catalog for search and deck research. This printing is from Core Set 2021. Collector number 278 distinguishes this printing from same-name cards in other sets.

Cactaur's take

Rin and Seri, Inseparable (278) is a chase-tier Mythic Legendary Creature — Dog Cat in Core Set 2021. Finish, border treatment, and grade drive most of the premium beyond raw near-mint quotes.

Pros

  • Rin and Seri, Inseparable is catalogued as Mythic Legendary Creature — Dog Cat in Core Set 2021, making set and collector number verification straightforward.
  • Public market data shows a reference near $35.55 across finishes (cardmarket: $6.75; foil: $35.55; Normal: $31.88).
  • Mana cost {1}{R}{G}{W} and type line Legendary Creature — Dog Cat help deck builders confirm the correct printing quickly.

Cons

  • Raw market prices vary by condition and finish — near-mint estimates are not slab grades.

Verdict: Use $35.55 as a benchmark, then adjust for finish, grade, and how quickly you need to buy or sell.

FAQ

What is Rin and Seri, Inseparable from Core Set 2021?

Rin and Seri, Inseparable is a Mythic Legendary Creature — Dog Cat from Core Set 2021 numbered 278 in Magic: The Gathering. Cactaur indexes set, rarity, mana cost, and market references for this printing.

How much is Rin and Seri, Inseparable worth?

Cactaur's catalog snapshot shows a market reference near $35.55 for ungraded Rin and Seri, Inseparable. Condition, finish, and recent sold comps can move realized prices above or below that benchmark.

What rarity is Rin and Seri, Inseparable?

Rin and Seri, Inseparable is catalogued as Mythic in Core Set 2021. Use the collector number and set symbol on listings to confirm you are buying this exact printing.

Is Rin and Seri, Inseparable legal in Commander or Standard?

Rin and Seri, Inseparable shows format legality in historic, timeless, gladiator, pioneer based on our latest ingest. Always verify the exact printing and ban-list updates before registering a deck for an event.

Why does Rin and Seri, Inseparable trade at a premium?

Rin and Seri, Inseparable combines Mythic scarcity with art, finish, and format demand. Chase slots often move on reprint rumors, tournament results, and condition-sensitive buyer interest.

Related cards

Trust & data sources. Cactaur displays catalog and market data from pokemontcg.io embedded TCGPlayer/Cardmarket references. Prices change frequently and are not guarantees.

Cactaur does not authenticate cards or guarantee values. Scan your copy in the iPhone app for condition-aware guidance.

Catalog snapshot: 2026-06-23. Last updated: 2026-06-23.