Deny Recourse

Suspend {4}—{b}{b} (Rather than cast this card from
your hand, you may pay {b}{b} and exile it with four
time counters on it. At the beginning of your upkeep,
remove a time counter. When the last is removed, cast
it without paying its mana cost.)
Destroy all creatures.
To fight against the Forgotten armies head-on, means
to only take casualties and strengthen them beyond comprehension.