Harrowing Swarm
Sorcery
Manifest dread. Then each face-down creature you control gains "This permanent costs less to turn face up" and "When this permanent is turned face up, if it's a creature, put a +1/+1 counter on it."
Not legal in Commander
Sorcery
Manifest dread. Then each face-down creature you control gains "This permanent costs less to turn face up" and "When this permanent is turned face up, if it's a creature, put a +1/+1 counter on it."
Not legal in Commander