Random non-transmute prismatic augments?

This might have been posted before but what's the mechanic behind some people being able to get prismatic augments when everyone else doesn't?

Seen a couple of games where one team gets to choose prismatic and the other is just all gold which results in a one-sided sweep (it is not transmute prismatic).

https://preview.redd.it/u6jrh1jawnfh1.png?width=1257&format=png&auto=webp&s=17973704d792a21c80a93d1f55803e6439698117