Tune of Insanity

As an additional cost to cast Tune of Insanity,
Discard X cards
Each player reveals X common cards from outside
the game they own and put them into their hand.
(Cards chosen this way must look identical to other
cards in your hand and library)
Paranormal- As long as you have at least four
cards in your graveyard and in exile, Tune of
Insanity has Flashback {5}{b}