The Monk Temple

[Traison]

Or just say Random? The word is already in there. Whats the point of saying 'Number Generator'?

You could argue that there is some RNG involved in the dps numbers which can lead to titan not always transitioning phases at the same points *gasp*

RNG is a common place phrase in regard of video games. You can use any word you want, if you wish, however it does not change the fact that if someone says RNG, you know what they are talking about. You can argue that RNG is simpler to say than "Random".
RNG is pretty much a meme now a days, you may not like it, but it is, and it represents randomness in a lot of different forms.