Talk:Passives/@comment-4489568-20151011042811/@comment-49.144.168.221-20151107194323

I think they just chose those because theyre in relation with whatever the warframe is. Like excalibur with swordsmanship. Since hes skilled with a sword. Nimble for valkyr since shes a berserker. And berserkers are those norse guys who fight like they are unphased by anything. If they fall they immediately get back up on their feet and fight again.