Mad Monk's Castle

Mad Monk's castle enters the battlefield tapped
unless a player milled 3 or more cards this turn.
{t}: Add {u},{b} or {g} to your mana pool.
{2}{b}{u}{g}{t}: Sacrifice Mad Monk's Castle.
Create a 9/9 Legendary Snake God creature token
with indestructible named Ssseth the forgotten.
Activate only, if there are 9 or more
creature cards in your graveyard.