Beast of Aldebaran

Beast of Aldebaran's power is equal to the number of creature cards in all graveyards.

At the beginning of each player's upkeep, that player discards a card

Madness—{1}{b}{b}
"The Beast Encircled The Spires of Carcosa, and Sat Beneath Its Twin Suns, a Permanent Reminder That Madness Needn't Wait Till Dark to Descend"