I know how Warcaster works. I've run simulations generating two sets of 10 billion d20 rolls and the average is 13.7. That is 3.2 points better than the average of a d20 roll (10.5).
At level 5 your proficiency bonus is +3. That's just slightly worse than 3.2. But it's better if the +1 CON bumps you up to a total of +4 compared to what you had before. In that case your average roll would be 14.5. At level 9 your average roll is 15.5 compared to 13.7 from Warcaster. (Note: I didn't add in any CON bonuses because I don't know what people are going to have. My one assumption for this paragraph is that whatever your CON was, it was an odd number so Resilient bumped it up to an even number)
Last edited by natural20s; 13/10/23 07:42 PM. Reason: Added clarification
