Exos, Giver Of Life

Indestructible, Lifelink, Partner with Mordeo,
Reaper of souls. As long as your devotion to
black and blue
is less than 7, this isnt a creature. Creatures you control have Lifelink. You can cast cards from
Exile.
{7}{u/b}{t}; Put onto the battlefield under your
control a creature
card from any graveyard. When this
card leaves the battlefield, Exile that creature.