Tokens = Tomestones of Mythology. The system is already in place, you know.

Besides that, it's RNG. I went 3 weeks without seeing a single caster item drop; I don't even care. There's no rush to get the gear. RNG is RNG. We're going to be stuck on this content for a very long time, much longer than most of you seem to think (many months). I'm fine with just sitting back and enjoying it.