Ajani, Peacemaker

Ajani, Peacemaker enters the battlefield with 3
loyalty counters.
Whenever a card would enter a graveyard, you
may shuffle it into its owner's library.
Whenever a planeswalker enters the battlefield
under your control, you may move any number
of loyalty counters from Ajani, Peacemaker to
that planeswalker. Then double the number of
loyalty counters on Ajani, Peacemaker.