The Pale King

{t}: Search the top 4 cards of your library for a
card named Pure Vessel, and put it on the battlefield. Discard any others.
{w}{w}{t} Sacrifice all other nonland permanents
you control: Search your library for a card
named Pure Vessel, and put it on the battlefield. Activate this ability only if you control 5 or more
other nonland permanents.
—
No cost too great.