Release the Netherealm

Spellswallow X (As part of this spells casting cost,
you may exile any number of instant and sorcery spells
from your graveyard and/or hand).
Create half X 1/2 blue Horror Demon creature
tokens with haste, where X is the number of
cards you exiled using this card's Spellswallow
ability.
" Men... fix bayonets, don't flee, DON'T FLEE!,
Aargh!!!!" - Cadian Sergeant Stromweld.