Papyrus, Depressed Murderer

First Strike
If Papyrus, Depressed Murderer is blocked by a creature with less power, destroy that creature and
put a +1/-1 counter on Papyrus, Depressed Murderer. Papyrus, Depressed Murderer's toughness is
equal to the number of creatures in all graveyards.
{p/r}: Search your library for a card named Afterlife Motivation, put it into your hand, then shuffle your library.
It doesn't seem like he wants to do this. It looks more like someone is forcing him to kill them all.