Stellar Dragon

Abjure {4}(You may have an opponent cast target
noncreature, nonartifact spell in their graveyard with
a converted mana cost 4 or greater for {0}, then exile it
to reduce this creature's mana cost by {1}{u}{u}.)
Flying, Shroud, Deathtouch
When Stellar Dragon enters play or attacks,
choose any Planeswalker outside the game or
search your library for 1 then shuffle it after,
and put it into play.