Firmament's Roar

•Allies, affected by the Aura you've attached to
yourself, have the cost of their ABILITIES and
SPELLS reduced by {1}. This SPELL can not
cause ABILITIES and SPELLS to cost less than {1}.
•FIELD MARSHALL: You may play this card as
you enchant yourself, for free.
•If you play another SPELL with FIELD
MARSHALL, or the Aura attached to you is
DESTROYED, or you attach a new Aura to
yourself, Opponents are no longer affected by this
SPELL. You put this SPELL in y