Had five stones this morning (one from the 20 million celebration gift egg, four from two daily messages).
Waited until the godfest activated.
"Only" got a Machine Golem (well, three stars DOES classify as "rare"...)
Not too bothered, since I didn't have one yet. And it'll probably work better than my White Knight, once I fuse a few light creatures into it (it only showed up at L4...).
(I will admit there's one situation where I *will* buy a set of six stones--when I have no stones, but I still need to expand the monster box. One stone to expand, the other five to treat myself to the REM, whether or not anything special is planned that day.)
Still, I rather wish there were somewhat easy and/or dependable ways to get my hands on Aesir and/or Ssu-Ling.