So i just did the 4*to see what knights where available. Got Yulan out mine.
FYI, The Silver gatcha is random. You cant pick what 4* knight you want.
Hmmm, the only one I don't have yet is Snowflake. But I figure the chance of getting her would be bigger if I actually used the 285,448 gacha seeds I have laying around. Aaaand I don't have the flowergems for the 5* ticket, so I guess I'll just skip this one.