Rin and Seri Inseparable 1910

“Whenever you cast a Dog spell, create a 1/1 green Cat creature token. <br>Whenever you cast a Cat spell, create a 1/1 white Dog creature token. <br>RGW, 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.”