Cheapest priced copy (Secret Lair Drop): $15.99 at Card Kingdom, near mint, their price list as of .
Garfield and Odie, Best Buds 
Rin and Seri, Inseparable
Legendary Creature — Dog Cat · 4/4 · Mythic · Secret Lair Drop · #2668
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.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $15.99 to $47.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Core Set 2021 | 278 | Mythic | $32.99 | $27.99 |
| Secret Lair Drop | 1230 | Mythic | $42.99 | $47.99 |
| Secret Lair Drop | 1910 | Mythic | $23.99 | — |
| Secret Lair Drop (Garfield and Odie, Best Buds) | 2668 | Mythic | $15.99 | $15.99 |
4 rulings from Wizards of the Coast
- 23 June 2020If the chosen target is an illegal target by the time Rin and Seri's last ability tries to resolve, the ability won't resolve. You won't gain life.
- 23 June 2020Rin and Seri's first two abilities don't trigger when you cast Rin and Seri.
- 23 June 2020An ability that triggers when a player casts a spell resolves before the spell that caused it to trigger. It resolves even if that spell is countered.
- 23 June 2020The amount of damage Rin and Seri's last ability deals is determined only as that ability resolves. If Rin and Seri is still on the battlefield, it'll count itself.