Sean, Loving Owner

As long as Sean, Loving Owner and Pip, Savage Mongrel are on the battlefield. At the beginning
of each opponents upkeep you may have that
opponent gain control of Pip, Savage Mongrel.
Except Pip, Savage Mongrel gains Indestructible,
and cannot attack you or planeswalker you
control, and cannot be sacrificed. You regain
control of Pip, Savage Mongrel at the end of their
turn.
Partner with Pip, Savage Mongrel