Talk:Void Relic/@comment-2A02:C7F:DA39:D000:4DC5:E082:A542:A53C-20170704185305/@comment-23998256-20170705045300

A 'Rotation' is what defines what you can get in what reward phase. Every endless mission has one. Specifically, Defense missions have a Rotation cycle of A/A/B/C at the 5th, 10th, 15th, and 20th rounds, with it repeating once you go past the 20th.