User blog comment:SummonerShadow81/GGC:Reeze/@comment-28568359-20160902112844

Imo you don't need to wait for a full omni team. Clearing it with a full 7* team is possible. I think you should include what 7* units you have so others can give you a good set-up.

You can try with your current set-up of four omnis. I'm thinking you might want to replace Zekt with Kalon or Avant, for damage. Also if you SP-ed Silas to have that def conversion buff, that'll be very helpful. Just be reminded that for the very last part, make sure Lilith and Reeze die at the same time.