Berin Abenard, the Obsessed

Vigilance, menace
When Berin enters the battlefield, for each opponent, create a Clue token and gain 1 life.
{1}, Sacrifice an artifact: Put a +1/+1 counter on Berin.
{w/b}{w/b}, {t}: Berin fights another target creature. If the other creature dies, you create a Clue token and gain 1 life.