SCP 722 Jörmungandr

When you cast this spell for its mana cost,
counter it unless you pay {s}.
Trample, Toxic 1, Snow landwalk
Whenever SCP 722 would deal combat damage
to a player, it deals damage equal to its power to
that player instead.
SCP 722 enters the battlefield tapped with a stun
counter on it for each mana from a snow source
spent to cast it.