pf2e.fyi
From Pathfinder Howl of the Wild, which isn't enabled.

Magiphage

ANCESTRY FEATURE 1

The various nodes throughout your body draw in latent magic from the world around you. You don't need to eat or drink unless you're in an especially magic-poor environment (such as the Mana Wastes). Choose what tradition of magic you most consumed as a larva; this type of magic has become so ingrained in your body that it changes the tradition of all surki spells and magical actions to that tradition.

Pathfinder Howl of the WildORC