The Golden Throne

You may look at the top card of your library any time.
You may play lands and cast spells from the top of your library. If you cast a spell this way, pay life equal to its mana value rather than pay its mana cost.
{t}, Sacrifice ten nonland permanents: Each opponent loses 10 life.

"To know one's place is the greatest comfort, to excel within it is the greatest solace, and a master's contentment is the greatest reward."
— Codex Administratum Edition XXIIVC