Queen of the Artic Moor

Snow creatures you control have Persist. (When
it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1
counter on it.)
Whenever a snow land enters the battlefield,
put a +1/+1 counter on each creature you
control.
Whenever a snow land enters the battlefield
under your control you may pay {s}{s}. If you do, create a 2/2 black snow zombie creature token.