So I was reading through The Inner Sea Magic and came across the shadowcasting feats. As someone who plays an illusionist often, I fell in love with this concept. My question though is if its worth it since 1d6 per spell level and the lost of the spell using a standard action seems a little too pricey given it can be disbelieved before you even get to that part. Although the versatility of the feat is nice.
My thought was maybe design a feat tree around shadow gambit or a prestige class like the dragonheart mage. Any help designing this or ideas on the feat would be helpful, thanks. I hope I put this in the right board.