Rin and Seri, Inseparable (Buy-A-Box) [Core Set 2021] Nemesis Set: Battle Royale Type: Sorcery

Set: Battle Royale Type: Sorcery Rarity: Rare Cost: {4}{W}{W} Destroy all lands or all creatures

Set: Hour of Devastation Type: Legendary Planeswalker — Bolas Rarity: Mythic Cost: {5}{U}{B}{R} +3: Each opponent loses 3 life unless that player sacrifices a nonland permanent or discards a card

lands tapped for mana produce mana of the chosen color instead of any other color

It has "This creature's power and toughness are each equal to the number of experience counters you have

Rin and Seri, Inseparable (Buy-A-Box) [Core Set 2021] Nemesis Set: Battle Royale Type: SorcerySet: 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.