Question about Magic Weapon Abilities

[wintersrage]

In the Core Rule Book it says Reroll if you get a duplicate special ability, but in the Ultimate Equipment it doesn't say anything of the sort in the magic weapon section of the book, which take precedent.

[kinevon]

Most weapon magic abilities don't stack with themselves, so you should usually reroll when you get a duplicate ability on a random magic weapon.

A few things can stack, or be applied multiple times, like Bane, as long as each Bane is for a different creature type, but you can only make a weapon Flaming once.