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I am converting some 3rd party adventures to PRGP for some side treks in my campaign and wanted to make sure that I am doing the conversion and CR calculations properly. I am doing my conversions based on the info on Pg. 297 in the Bestiary “Adding Class Levels and Determinig CR” along with info on Pg. 398 in PRPG Core for “Adding NPC’s” under Designing Encounters.
(All examples listed below will be using goblins and bugbears as that is most of what I am converting at the moment)
A couple of quick questions first:
1)Under the Goblins entry on pg. 156 in the Bestiary it has a section “Goblin Characters.” Do I use the stat modifiers listed there in place of the stat modifiers listed on Bestiary pg. 297? Or do the modifiers on pg 156 modify the base stats and then I modify them again with the modifiers listed on pg 297 when adding PC class levels?
2)In reference to the stat mods on pg 297 are they only for creatures who’s HD are not solely based on their class or are they for all creatures for whom you are going to add PC class levels?
Some sample CR calculations:
Goblin 1 – Ftr 3 - CR = HD -1 (PC class) = 2
Goblin 2 – Ftr 1 - CR = HD -1 (PC class) = 1/2
Goblin 3 – Warrior 3 - CR = HD -2 (NPC class) = 1
Goblin 4 – Warrior 2 – CR = HD -2 (NPC class) = 1 or ½ as you can’t have a CR 0
Hobgoblin 1 – Warrior 3 – CR = ??? (Generally the equation is HD + 1 per Key PC class level. How do NPC classes calculate in this case for CR? Would it be considered a Non-Key class?)
Hobgoblin 2 – Ftr 4 – CR = HD (3) + Key PC class levels (4) = 7
Hobgoblin 3 – Clr 4 – CR = HD (3) + 1 per 2 Non Key PC class levels (2) = 5