I've been using this for a character I am using in a Pathfinder 2e game. The GM has been very loose with the limitations on it but I am looking for a little insight on how this is supposed to work. For a Cantrip, that is a level 0 spell it would have no words. How does that work? Furthermore it says that you can only have as many harmonics as the number of words but for a 2nd level spell the power is 11-18(it says 11-25 for 2nd-3rd level so I averaged it out for 2nd.) With only 2 harmonics how does one make it to this level? I feel like I am missing something here that I am supposed to be using to increase the spells limits. Are there more harmonic options I am not aware of or am I missing a step here? I am really enjoying the spells I am making using this book but I'm just a bit confused at this point due to this limitation.
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Under the slot-based conversion on pg. 26, cantrips aren't a thing. If that's breaking for your game, dispense with the "spells’ levels are equal to the number of words in the spell" rule, and use the table on pg. 15 as a guide for leveling your spells.
The Detriment Rule (pg. 42) can get you more resonance out of a spell outside of the harmonics; there are ways to optimize your harmonics up to the levels described by the chart on pg. 15, but the Detriment Rule is an easy way to do it without sweating too much over them.