Syr Konrad, the Grim is a rare Legendary Creature — Human Knight card from Secret Lair Drop (SLD), collector number 1297. Current market price: $45.25 (foil $58.35), TCGplayer market prices via Scryfall.
Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad deals 1 damage to each opponent. {1}{B}: Each player mills a card. (They each put the top card of their library into their graveyard.)