Midna, Twilight Princess

Menace
When Midna, Twilight Princess enters the battlefield, each opponent sacrifices a nontoken creature or planeswalker.
{4}{b}: Exile Midna, Twilight Princess, then return
it to the battlefield transformed under its owner's
control. Activate only as a sorcery and only if an
opponent has eight or more cards in their
graveyard.
Transformed by a curse, Midna is the ruler of the
Twili people.