So, i've been doing Champ Spawns lately to try to get Primers, and i've noticed that the drop rate for Primers above Lvl 1 is stupid rare. I've done quite a few Champ Spawns on Atlantic with groups of people, and have gotten about 15 Primers there. I've also soloed 10 Champ Spawns on Napa, and so have 60 Primers (6 per Champ) there. Out of 75+ Primers, 73 are Lvl 1, 2 are Lvl 2, and 0 are Lvl 3... If Mastery is going to be a big part of a character, the higher level Primers really should be more common than that. Especially considering they're Shard Bound. Maybe make them bindable with a Scroll Binder?