Hare of the Curse

Infect (This creature deals damage to creatures in the
form of -1/-1 counters and to players in the form of
poison counters.)
When Hare of the Curse enter the battlefield,
remove -1/-1 counter on it if you control more
than three snow permenant.
Persist (When this creature 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.)