Pitirth, Beond Realms

: If you have an Liosaet creature Pitirth, Beond Realms gets +X loyalty every time she taps and Liosaet gets +X/+X.
+3: Destroy target planeswalker, exile its owner's hand.
-10: Search in your graveyard for an planeswalker with the rarity of rare or less and move it to your library.