Cryos, The Ice Mage

Morbid - When Cryos, The Ice Mage enter the battlefield, if a creature died this turn you may
pay {s}, if you do create a 0/4 Blue ice wall creature token with "This creature counts as a snow creature".
{s}{t}: Create a 0/4 Blue ice wall creature token with "This creature counts as a snow creature".
{u}{t}: Until the beginning of you next upkeep target creature you control may black an additional creature.