Zhengyian Tome of Creation

{t}: Add {c}{c}. This mana may only be spent to cast instant or sorcery spells.

{u}{b}{g}, Pay two life: Put X Creation counters
on Tome of Creation where X is the amount of life you lost this turn.

Remove ten counters from Tome of Creation, Sacrifice it: Search your library for a Legendary Land card named Castle Perilous and put it onto the battlefield untapped, shuffle your library.