Burial Watchdog

When Burial Watchdog enters the battlefield create two 2/1 Fanged Imp artifact creature tokens with Bleed 2.

Whenever an artifact is put into your graveyard
from anywhere, each opponent loses 1 life and you gain 1 life.

"The Watchdogs, battered and broken over their lengthy tenure, rule the catacombs and are
even said to command the imps."