Glad you liked it! This has been a fun series to write - it's data I'm collecting anyways for myself, and it's nice to share my findings more broadly.

Almo is the one that got used the most. But Possibilus I think is the one with the highest ROI, partially because of how relatively cheap it is.

One thing I'm planning on doing is like a recap post comparing all the cards I looked at in one post. I'll probably do that once the last CL summoner gets dropped.