My sword - Frostmourne - granted untold power to those who wielded it, at the price that the bearer's will would become subsumed to Frostmourne's own. Wasn't spelled out quite like that, but that was the practical gist of it.

[He paces to the other side of the chest, away from Elric, eyes back on Stormbringer.]

Power. Security. Untouchable strength - all for the toll of your own ability to feel guilt and remorse.

[He looks up and meets Elric's eyes again, and it's an act, though god knows who he's putting on the show for. He looks exhausted. And tempted. Very much so.]