Rin and Seri, Inseparable (Buy-A-Box) [Core Set 2021] Zendikar You may spend blue mana

You may spend blue mana as though it were mana of any color to pay the activation costs of Quicksilver Elemental's abilities

Set: Premium Deck Series: Graveborn Type: Sorcery Rarity: Uncommon Cost: {B} Choose a nonland card name

Set: Core Set 2020 Type: Legendary Planeswalker — Ajani Rarity: Mythic Cost: {2}{W}{W} +1: You gain life equal to the number of creatures you control plus the number of planeswalkers you control

Set: Mythic Edition Tokens Type: Emblem — Elspeth Rarity: Common Artifacts

put a corpse counter on Scavenging Ghoul for each creature that died this turn

Rin and Seri, Inseparable (Buy-A-Box) [Core Set 2021] Zendikar You may spend blue manaSet: 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.