KarinsDad said:2 for 1 for 15 and 16
3 for 1 for 17 and 18
Nice hint.MatthewJHanson said:Easy way to remember, its the ability modifier of the stat you are increasing from. (Min 1 of course)

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.