Ritual of Shadows

All spells and permanents you control gain the Shush type in addition to their other types.
{t}: Add {w/b}{w/b} to your mana pool.
{w/b}{w/b}{w/b}{t}: Put a card exiled with a Shush card into play without paying its mana cost.
{w/b}{w/b}{ut}: When a Shush card destroys a card this turn, Exile it instead.