The Maw of Hunger

If a creature would die, exile it instead.
At the beginning of your upkeep, if there are ten
or more creature cards exiled with The Maw of
Hunger, sacrifice it and create Srai, the Ashen
God, a Legendary 10/10 red Skeleton God
creature token with haste, trample, trailblazer,
and "{r}: Srai gets +1/+0 until end of turn."
(As long as a creature with trailblazer is attacking,
if the defending player declares any blockers, they
must block the creature with trailblazer if able.)