User blog comment:SolarMist/Tips for Defending Sealstones/@comment-39.219.209.225-20131216110820/@comment-17760674-20131219060814

Since they can be gotten through luck even by low-level players, none of them are really good deterrents. However, if you compare them to each other, I think Pure Sagittarius is the best deterrent since she is the only defensive daemon (and also has the highest defense and a good skill + trigger rate combination) out of the four signs we've gotten so far; in comparison, Virgo, Libra, and Scorpio have worse raw defense and also have attack-oriented skills. Unfortunately, at this particular time, Phantoms are rather underwhelming compared to Divinas (who get the type advantage over Phantoms), so Sagittarius is still going to attract a lot of players. (... well, Divina has always been strong, but Phantoms have had it particularly bad for a few months compared to earlier this year.)