Kitab al-Azif

Cannot be countered, Protection from all, Indestructible
Creatures you control have:
•Madness {3}{b}(If you discard this card, you may
cast it for its madness cost instead of putting it into
your graveyard.)
• Flashback {3}{b} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
• Indestructible (Effects that say "destroy" don't
destroy this permanent.)