Really diggin' the throwback to Caw-Blade. RIP Stoneforge Mystic .

Moonsilver Spear is really subpar. Unless there's an interaction I'm not paying attention to, you should drop it for a fourth Abrupt Decay . Behemoth Sledge could go too, but at least it gives you trample/lifelink. You don't need more than a few targets for Steelshaper's Gift . Maelstrom Pulse exists in the same space as Abrupt Decay , so one or the other could be sided out, depending on your meta. Same with Extirpate . More of a SB card but then again, you might have a reason for it regarding your meta. Day of Judgment /Black Sun's Zenith + Victim of Night /Go for the Throat for more sideboard options, though you could main Go for the Throat or an Oblivion Ring in place of Extirpate /Maelstrom Pulse . The more hate, the better. Gavony Township would be a good addition to help close out games if your swords don't come through.

@Dismay

Thanks for the comments! No +1?

Oh Well...

Moonsilver is really bad, but funny and insulting to lose to. It has been cut.

Local Meta is mostly combo, with little aggro currently. So blanket removal and creature specific removal makes less sense in the main. That being said, things that can't be hit by Pulse or Decay likely won't be hit by victim anyways. Went the route of O-Ring and Devour Flesh.

Added some Pridemages and lost the Sin Collectors. After all the flooding I did, I adjusted the lands a bit and was convinced to try a KoR package. Will test and report again.