Rin and Seri, Inseparable (1910) [Secret Lair Drop Series] THB If the sacrificed creature's toughness

If the sacrificed creature's toughness was 4 or greater

where X is the number of different mana values among cards in your graveyard

where X is the sacrificed enchantment's mana value

As Thriving Isle enters the battlefield

“To fill your mind with knowledge

Rin and Seri, Inseparable (1910) [Secret Lair Drop Series] THB If the sacrificed creature's toughnessSet: Secret Lair Drop Series 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 deals damage to any target equal to the number of Dogs you control. You gain life equal to the number of Cats you control.