Mastery
Increase Trove Mastery by adding to your collection and by leveling up classes. The first 500 Trove Mastery Ranks each grant +0.6% Health, +0.2% Damage, and +4 Power Rank. After that each rank gives +1 Power Rank and +1 Magic Find.
Increase Geode Mastery by adding to your collection. The first 100 Geode Mastery Ranks each grant 10 Light, and +5 Power Rank.
Trove Mastery List Total: 
182,807
157,174 Collections
13,410 18 Classes
745 Each Class level 1-30.
450 Professions
Each crafting tier rewards 75, there are 3 professions in total.