Our free preview month continues! One of my players once commented that you don't fully understand Nightwick until you understand froglings. I'm honestly not entirely sure what he was trying to get at, but that's likely because I understand their inclusion on too instinctual a level to explain it in words.
I have provided rules for both race as class and as an advanced race option.
Edit: Updated to fix some formatting errors and to incorporate some advice from Gavin Norman - writer of OSE - himself!