Lord Anomander Rake

At the beginning of your end step, look at the
top three cards of your library. Put one into your
hand and the rest into your graveyard.
Convergence —Whenever Lord Anomander Rake
attacks, if there are four or more legendary permanents on the battlefield, exile target
creature until Lord Anomander Rake leaves the battlefield.
Sacrifice Lord Anomander Rake: Return target
creature card from your graveyard to the
battlefield.