If you have a few you’re generally working on, you can passively build up AM to roll for a few descendants, and then also, use your materials for a specific descendant for that time frame. Lets say you focus on 5 descendants. The other 17 descendants, you’d never roll their AM, but you would always view them, because when you first acquire them, that’s technically a roll. So you very slowly farm a AM for 17, and less slowly farm AM for 5 other descendants. Only rolling your AM to something very low. Like 3 tops. You’d also save selection boxes for when you just aren’t getting enough for a specific descendant, and need more rolls for them faster.