Book Of Madness

Indestructible.
{1}{t}: Add {r}{b}{u} to your mana pool. Then
discard a card unless you control at least one
of the following: cleric, demon, devil, eldrazi,
god, hag, horror, kraken, merfolk, mutant,
octopus, thrull &/or wizard.
Lose 5 life: Take book of madness from your
graveyard or exile into your hand.
Do not read such a tome,
without a lot of protective magics.