7 Agi is almost guaranteed to give you +6 base damage (5% chance of only giving +5 damage). A fairly solid gear set will put you at about 200 base damage, which means the +6 damage will be worth about 3.0%.

Epona's, on the other hand, will -not- give you its full benefit, since two triple attacks will cap at +3 attacks instead of +4, and is generally devalued based on how much DA/TA you already have. Overall average puts it a very small bit ahead of a Stormsoul if Saber Dance is down, or a similarly very small bit behind a Stormsoul if Saber Dance is up.

Overall, I wouldn't bother with the inventory +1 of a second Stormsoul for this use case. You still want at least one Agi ring to use in place of Rajas, though.


On Houyi vs Justiciar, if you get all 6 points of base damage from the 6 Agi, or you're already capped on fStr, Houyi basically ties with Justiciar. If you don't then Justiciar's is a small bit ahead (a larger difference than the Stormsoul vs Epona comparison).