Yeah, even decks taht are run by just the mark, like Chryssoara/Physalia water decks, will still do better with Arsenic or Vampire Dagger. Changing the card to match Hammer | Gavel and Shortbow | Longbow would be a good idea imo. But in that sense, making a new card with the ability would be better for those decks that actually could use a costless weapon. (Could be named Machete | Machete) This idea has actually been an idea for a while, glad its being applied.