Sir Thorfinn the Cruel

Sir Thorfinn the Cruel counts as a Duke and
an Argent Angel.
When Sir Thorfinn the Cruel enters the battlefield, each opponent discards a card.
For each opponent who can't, you gain 4 life.
Thorfinn Vision: {t}: {t} 4 other target creatures
as they listen.
I've killed more people than smallpox.