Devoted Blade

This is a Magus Arcana — a class feature gained through that class's own talent choices, not a feat you pick through normal feat selection.

Whenever the magus enhances his weapon using his arcane pool, he may spend 1 additional point from his arcane pool to add either the anarchic, axiomatic, holy, or unholy special ability to the list of available options. A magus may only add one of these abilities if it matches his own alignment. The magus must be at least 12th level before selecting this arcana.