For the purposes of the Vigilante's Returning Weapon talent. I'm thinking of using Viridium or Obsidian weapons and Disposable Weapon, but I'd like a better crit rate.
Unique to shuriken as far as I can tell. The only other thing I'm aware of that behaves the same is the card caster stuff: Deadly Dealer and Arcane Strike are the pertinent feats.
Playing cards. With the rouge talent or the magus/witch archetypes. It's in the Harrow Handbook. And that assumes you want to spend a level or two on another class.
Crystal chakrams are treated as ammunition for the purposes of enchanting. That's probably enough for the returning weapon talent, which seems to be based on the same thing.
Crystal chakrams are treated as ammunition for the purposes of enchanting. That's probably enough for the returning weapon talent, which seems to be based on the same thing.