Link: https://na.portal.sf.my.com/comments/55 ... /17?page=1When you first do an instance in the invasion you get the following
(Only the first time you get this rank, repeating it = nothing)
C rank: 10 sparks of divinity
B rank: reliquary (500 of each coloured spark)
A rank: 10 sparks of divinity
S rank: costume
The 3 man instances are back, the same ones from the first day as the instances are on a rotation it appears. So if you got S rank with them all on the first day, you appear to get nothing extra this time. (no free 1500 sparks again)
Not sure if this is by design, but it makes sense.
So it seems its worth to try to get each rank in invasions for each reward. From what I am understanding in his post, if you repeat the invasion and get Rank C twice, you only get rewarded for it the first time, but if you get Rank C on first run and then on second run you get Rank B, you get both rewards and so on and so forth.
Also it seems if you get Rank S, you get all the rewards.