Xenothereal Knight

Whenever Xenothreal Knight is cast from your
hand or a planeswalker you control is discarded
or leaves the battlefield, search your library or graveyard for a planeswalker put it onto the battlefield or into your hand, then shuffle your library if searched this way
{u/r}{u/r}{1}: Return Xenothereal Knight to its
owner's hand (This can be used anytime an instant
can be played)