Tourach's Refrain

You can't cast Tourach's Refrain from your hand.
Target player discards two cards at random.
Flashback {b}{b} (You may cast this card from
your graveyard for its flashback cost. Then exile it.)
"It wasn't the hymn that sent fear into his enemies; it
was the pause for a breath, knowing more was to
come, that shook them to their core."
-The followers of Leitbur