Marketplace

Reference artwork · details may differ from this copy

About This Card

Rin and Seri, Inseparable is a Legendary Creature — Dog Cat from the Core Set 2021 (M21) set. This Mythic Rare card features a normal layout and was illustrated by Leesha Hannigan. It has a mana cost of {1}{R}{G}{W}, a mana value of 4, and colors G, R, W. The card has a power/toughness of 4/4 and is presented in a Foil finish.

Rin and Seri, Inseparable

2020 • Magic: The Gathering • Core Set 2021

2020 Magic: The Gathering Core Set 2021

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Market Value

Raw/Ungraded Market: $29.90

Updated 5 days ago

Based on TCGplayer Market (reference)Last Updated Oct 14, 2026Check Price Guide

Market & Price History

Condition	Value	Source	Trend	Price Details
	$29.90Oct 15, 2026	Guide Estimate	-4.3%
Based on TCGplayer Market (reference) Estimate: $29.90, based on Guide Estimate. Source date not availableCaptured Oct 15, 2026 Guide Estimate: $29.90. Evidence date not available. Few comparable observations are available, so this estimate may be less reliable. Over the last 30 days, stored prices ranged from $29.90 to $31.25 across 2 capture days. Change between Sep 28, 2026 and Oct 15, 2026: -4.3%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.Recorded Oct 15, 2026

$29.90Oct 15, 2026
Source
Guide Estimate
Trend
-4.3%
Price Details
Based on TCGplayer Market (reference)
Estimate: $29.90, based on Guide Estimate.
Source date not availableCaptured Oct 15, 2026
Guide Estimate: $29.90. Evidence date not available.
Few comparable observations are available, so this estimate may be less reliable.
Over the last 30 days, stored prices ranged from $29.90 to $31.25 across 2 capture days. Change between Sep 28, 2026 and Oct 15, 2026: -4.3%. Compares the same source, grade and signed status. Capture days are not completed-sale counts.Recorded Oct 15, 2026

30-day Price History

Raw / Ungraded

TCGplayer Market (reference) · Guide Estimate evidence · captured Oct 15, 2026

Each point is the last stored observation that day for this printing, condition, grader, autograph status and source. Gaps mean no observation; guide estimates and asking prices are not completed sales.

Product Overview

Description

Rin and Seri, Inseparable is a Magic: The Gathering trading card game card. It is a Legendary Creature with the subtypes Dog and Cat. The card has a mana cost of {1}{R}{G}{W} and a mana value of 4. Its colors and color identity are G, R, W. The power and toughness are 4/4. It is a Mythic Rare card from the Core Set 2021 set, with set code M21. The card number is 278. The artist is Leesha Hannigan. The finish is Foil.

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Product Specs

Card Details

The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.

Catalog Profile

The core identity of the card within the set.

Year

2020

Brand

Magic: The Gathering

Series

Core Set 2021

Card Number

#278

Featured Subject

The subject, team, league, and sport context tied to this card.

Featured

Rin and Seri, Inseparable

Game

Magic: The Gathering

TCG Attributes

Rarity, print treatment, and game-specific stats for this card.

Rarity

Mythic Rare

Artist

Leesha Hannigan

Material

Card Stock

Language

English

Finish

Foil

Mana cost

{1}{R}{G}{W}

Type

Legendary Creature — Dog Cat

Power / Toughness

4 / 4

Color

G, R, W

Card Text

Abilities, attacks, oracle text, and flavor text printed on the card.

Whenever you cast a Dog spell, create a 1/1 green Cat creature token. Whenever you cast a Cat spell, create a 1/1 white Dog creature token. {R}{G}{W}, {T}: Rin and Seri deals damage to any target equal to the number of Dogs you control. You gain life equal to the number of Cats you control.