Talk:Quick Thinking/@comment-19204879-20130930104411/@comment-10743657-20131005225407

"uh, transmutation is partly based on the rarity and polarity of the mods involved, so your chances of getting this mod would be better (still based on the RNG though) if you transmuted D polarity rares, like vigor or hammer shot which are easily farmable from nightmares."

Many people have tested polarity and found it doesn't always return the same polarity card. Some have also said Steve himself said only rarity mattered.