Old Friends

At the beginning of your upkeep, put a +1/+1
counter on Old Friends for each planeswalker
you control.
{p/w}{p/u}{p/b}{p/r}{p/g}, {t}: Search your library for a
planeswalker card with converted mana cost X,
reveal it, and put it into your hand, where X is
the amount of mana you spent on this ability.
Then shuffle your library.