Cramer and LM, Inseparable

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}: Cramer and Little, 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.