In this post I want to look at the differences in monster creation from the 3.5 systems and the 5e system. This first post I'll look at the Hit Die and the basic ability scores. I also want to make a progression based on the 3.5 creature ability arrays.
1. Hit Points and Hit Die
3.5 Hit DieIn 3.5, Hit Die are based on primarily the creature type. Creature types function as the player character classes in that they determine the base die and the level progression of #of Hit Dice.
5e Hit Die5e differs in that Hit dice are based on the size of the creature.
|Monster Size||Hit Die||Average HP|
3.5 Consistency v 5e InconsistencyIn a way, this creates an inconsistency between size and class based hit points in 5e.
On one hand, player Hit Dice are determined by the player's class. On the other hand, monster Hit Dice are based on size, which is primarily based on the creature type or the race.
I believe that this inconsistency is mainly to help maintain class balance. If player HP were based on a race based size, then a wizard could just pick the largest player race. That would create a very hard to kill wizard. Whereas, it would discourage picking small races such as the halfling or gnome because they would die much easier. Race does have a minimum influence on hit points due to the Constitution racial ability bonus that some classes have. A +1 or +2 CON bonus may improve the hit point modifier by one.
Maintaining class based HP on the other hand ties the hit points to the function that they will be doing in the game.
2. Base Ability ScoresThe 3.5 has mentioned three base scores depending on the how powerful the creature will be.
Standard (average) average 10
Non-Elite 13, 12, 11, 10, 9, 8
Elite 15, 14, 13, 12, 9, 8
My Attribute Score Progression for 5eBased on these three pools of stats, I created this progression chart showing a 5e stat increase based on raising two stats by 1 every 4 levels.