It's not especially complicated? What are you having difficulty with? Perhaps I can explain it in simpler terms so you can understand.
It's not especially complicated? What are you having difficulty with? Perhaps I can explain it in simpler terms so you can understand.
Does this exist in a source material that I can look into, or are you suggesting something homebrewed?Feat Rods. Specifically Reserve Feat Rods (or Amulet, or Whatever). Possibly "Domain Feats".

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