Shell keep your hand stocked while emerging from the mist as a sizeable, growing threat that attacks and blocks like a champ
Archivist of Oghma is fantastic at every power level, and hell draw you cards off of tutors as diverse as Vampiric Tutor and Evolving Wilds
And if the board becomes a little too overpopulated with creatures, you can also shut attacks off outright by pairing Pramikon with Mystic Barrier, Spark Double, or Sakashima of a Thousand Faces if need be
Reanimator, Eerie tempo, even aggro strategies
I also like that Xenagos ability triggers at your combat step, giving you a trigger the turn you play him
Itll also likely creep up over the next couple of years before another eventual reprint