How do I make 5e skill/ability checks
89159
Do you add Proficiency bonus AND the stat modifier to skill rolls?
108861
Calculating Wizard spell casting ability and spell attack bonus
127834
Anything I should keep in mind before I start mixing and matching between D&D 3.5e and Pathfinder?
78714
Are there requirements for crafting magic items?
93424
How many rolls do I need to determine if my dice are fair?
13364
Are there rules for creating level 0 characters?
81192
How can I test the quality of a RNG?
40312
How to quickly identify perfect powers
9188
Proficiency bonuses and multiclassing: highest, add all together, or what?
116602
I want to run a trial in D&D 3.5, but how can I avoid invalidation by magic?
87944
How to handle a Tiny Player Character in 5e?
3916
How do I create a D&D character correctly as a total newbie?
37857
How can I test the fairness of a d20?
151734
What guidelines exist for players creating characters for organized play?
94704
RPG Character Builder
26957
How to use, and not to overuse, Insight skill checks?
21514
How to design the attack class in an RPG game?