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Flying
Whenever you cast an instant or sorcery spell, creatures you control get +1/+0 and gain trample until end of turn.
Balmor's last ability affects only creatures you control at the time it resolves, including Balmor itself. Creatures you begin to control later in the turn or noncreature permanents that become creatures later won't get the bonus.
Balmor's last ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack without resolving.
