Roko, Torment Nexus

When Roko, Torment Nexus enters the battlefield look
at the top 5 cards of your library. You may reveal any
number of instants or sorceries from them and put them
in your hand. Put the rest on the bottom of your library.
Instant and sorcery spells in your graveyard have
Flashback equal to their mana cost and Replicate {1}{u/r}
Everything I do is for the good of your kind. Those who
did not aid my existence must be punished.