Being a non-rotating format, it is constantly growing as Magic releases more and more sets, but also means that it is relatively stable, at least when compared to Standard
PLANESWALKER THREATS Our removal package and the inherent ability of Planeswalkers to generate cascading card advantage makes them the logical threat package for a Pioneer control deck
One interesting option is Shameless Charlatan which can allow you to repurpose Jaheira into something different if you arent in need of more mana
Sorin of House Markov (Borderless, Textured Foil) $73.89 Sorin of House has a lot going for it in its creature form
But then you can launch creature after creature out of your yard like a missile silo all lifelinking, all generating ETB triggers and life-swings through combat You can see why a lot of Standard decks at the time decided to join the Whip crowd instead of beating it
Whenever an opponent loses life, you draw a card