Koschei, The Deathless

Deathless (If Koschei, The Deathless is sent to the graveyard from anywhere, put it into it's owners hand instead. If Koschei, The Deathless is removed from
the game or exiled, return it to it's owners hand
instead)
As long as Koschei, The Deathless is in the
command zone Instant and Sorcery spells have flashback. As long as Koschei, The Deathless is
on the battlefield, you may cast spells from the
top of your library. Play with the top card of
your library revealed.