Rya.Reisender
Explorer
There's actually an official rule for average HP rather than rolling. That would be 1d4 becomes 3, 1d6 becomes 4, 1d8 becomes 5, 1d10 becomes 6 and 1d12 becomes 7.I've used Max (HD) -N with some success, where N is usually 2 or 3. So in 5E, if N were 3 a wizard would get 3 HP per level, a fighter would get 7 HP per level, and a barbarian 9 HP per level. If N were 2, the figures would be 4, 8, and 10 respectively. I also have max HP for the first couple of levels, not just the first one.