That link does not work, but I found it anyway. For the record, according to the manual you mentioned it is called a Mana Shrine, not a Mana Pool. In any case, it is absolutely from the same source. It's a publicly available graphic pack; The fact that we both made use of it simply means it is quite fitting as a mana improvement. In fact, I do not even have MoM (or WM) installed, nor will I install them; I am quite capable of coming up with my own designs, as is the rest of the RifE team.