Islar Markov, Estate Overseer

Flying
When Islar Markov, Estate Overseer enters the battlefield, search your library for a Sorin planeswalker, reveal it, then put that card into
your hand. Then, search your library for up to 1
copy each of Sorin's Guide, Sorin's Thirst, and
Sorin's Vengeance, reveal those cards, put them
into your hand, and then shuffle your library.

"Welcome home brother, welcome home"