Best answer: Wraiths Kunai and her other heirlooms are only available through Apex Packs. There is, we are told, a one-in-500 chance of you receiving it so all you can really do is open as many Apex Packs as possible. You can win them or buy them but you will need a lot of them.Microsoft Store: Apex Legends (Free)Microsoft Store: Apex Coins (From $9)