Player > Background > Tinker

TinkerBACKGROUND

Core Rulebook p.64

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Creating all sorts of minor inventions scratches your itch for problem-solving. Your engineering skills take a particularly creative bent, and no one know what you’ll come up with next. It might be a genius device with tremendous potential... or it might explode.
Choose two ability boosts. One must be to Dexterity or Intelligence, and one is a free ability boost.
You’re trained in the Crafting skill and the Engineering Lore skill. You gain the Specialty Crafting skill feat.