Its a roughly 1 in 5.2 million chance for each spawned greater / runic talon, and for each blade talon that spawns there's only a ~17.5% chance it will upgrade to exceptional/elite. So you'll need to browse about 30 million blade talons- maybe 200+ million total claws- just to get a "basic" +2 sin / 40% ias / +3 ls. And then you want 2 sockets so either you rollback it or there's a 50% chance you get 1 socket from larzuk