Millennium Revelation

When Millennium Revelation enters the
battlefield, search your library for up to one
Egyptian God card, put it into your graveyard,
then shuffle.
{1}{w}, {t}, Sacrifice three creatures with praise:
Return an Egyptian God card from your
graveyard to the battlefield under your control.
It gains haste and "at the beginning of your next
end step, shuffle this card into its owner's
library."