Is there a way to increase the Gray Warden's Slaying Judgement? Would you allow having sniper's goggles or something similar to increase range?
For sniper's goggles, while in a private game I would house rule to allow to work on slaying judgement since it's range rules are based on those for sneak attack rather than that of something like coup de grace. However, RAW they do not and I would not allow it at my PFS table.
As for boosting the DC, only things that boost WIS will help. Headband of Wisdom, Tome of Understanding, and any other stackable bonuses you can find.
Thanks, it sounded like just the same rules for sneak attack but I wanted to make sure I wasn't crazy before taking it to my GM