Secret Base

Sacrifice a land. Secret Base enters the battlefield
face down and has hexproof.
{t}: Add {c}{c} to your mana pool.
{c}{c}, {t}: Turn face up: sacrifice Secret Base.
Add {w}{u}{b}{r}{g} to your mana pool. You may
search your library for up to two of any Vehicles, Humans, and or artifacts, and put them into
your hand. Then shuffle your library.