Four

When Four enters the battlefield, search your
library for a card named Battle for B.F.D.I,
reveal it, and put it onto the battlefield. Shuffle
your library.
This spell can't be countered, Partner with X
{b}, Sacrifice a creature: Scry 1. Untap Four.
{1}{r}, {t}: Deal four damage to any target.
{2}{u}, {t}: Draw two cards.
{3}{w}, {t}: Return target creature from your
graveyard to the battlefield.