Rin and Seri, Inseparable (Buy-A-Box) [Core Set 2021] MON000-CF or planeswalker card from among

or planeswalker card from among them and put it into your hand

(It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters

but it is necessary

*Souvenirs d'Enfance et de Jeunesse*

Set: Limited Edition Alpha Type: Creature — Skeleton Wall Rarity: Uncommon Cost: {2}{B} Defender (This creature can't attack

Rin and Seri, Inseparable (Buy-A-Box) [Core Set 2021] MON000-CF or planeswalker card from amongSet: Core Set 2021 Type: Legendary Creature Dog Cat Rarity: Mythic Cost: {1}{R}{G}{W} 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, Inseparable deals damage to any target equal to the number of Dogs you control. You gain life equal to the number of Cats you control.