Ingressus The Deathsinger

At the beginning of your upkeep, you may
sacrifice a creature. If you do, you may search
your library for an artifact, reveal it, put it
onto the battlefield tapped, then
shuffle your library.
Whenever a creature you control dies,
each opponent loses 2 life.
"They call me 'Deathsinger,' yet it was they
who slaughtered me the Prime Songs!"