Rin and Seri, Inseparable (Buy-A-Box) [Core Set 2021]Set: 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.

This card cannot be Special Summoned except by sending 3 monsters you control to the Graveyard

Set: Amonkhet Invocations Type: Sorcery Rarity: Mythic Cost: {2}{W}{W} Destroy all creatures

if an opponent controls more creatures than you

this monster boasts considerable force

Serendib Efreet deals 1 damage to you

sacrifice Ball Lightning

and whenever you cast a Dinosaur spell this turn

Set: Urza's Saga Type: Enchantment Rarity: Rare Cost: {2}{B}{B} Whenever a creature enters the battlefield

if this card destroyed a monster by battle: You can target 1 card in your opponent's GY

your opponent randomly picks 1 for you to Special Summon

−3: Return target artifact card from your graveyard to your hand

Set: POP Series 1 Type: Darkness Rarity: Uncommon Retreat cost: Colorless