Walrein

You may sacrifice a creature named Sealeo rather
than pay this spells mana cost.
Last strike, absorb 2.
Walrein gets +0/+3, loses last strike and has
trample and rampage 2 as long as the defending
player this turn controls a snow land. {u}{u}, {t}: Walrein deals damage equal to half
its toughness rounded down to each attacking
or blocking creature target player controls. If {s} was spent this way, put a stun counter on each
nonsnow creature dealt dama