Erizyik, Insidious Nightmare

Erizyik can't be countered.
As long as your devotion to black and blue is less than
3, Erizyik isn't a creature.
{t} Populate, then populate again.
{u}{p/u}{b}{p/b} Create a token copy of Helm of the Host,
then attach it to a permanent you control.
{6}{t} Erizyik is no longer legendary until end of turn.
{2}{b} Draw two cards off of the top of your graveyard.