Been playing the game for a few weeks now - actually started at the tail end of the last sacrifice event (when I wasn't really sure what I was doing). I've built up a pretty solid team that I'm now working on tally-tuning.

So now I'm sitting on nearly 1K common souls (I've been grinding LoL10 almost every day it's open - never once picked up a rare from it despite the rare souls being in the loot table - but I digress)... Should I be saving them for the next sacrifice event?

How often do the sac events come around?

thanks!