Talk:Underworld Tower to Heaven/@comment-2600:8801:2880:2500:C4DB:F177:3B90:D02-20170815061945/@comment-222.167.20.6-20170815165206

if you can't collect 5 runes and play expert during rune time, you probably won't able to rank within 500. Rune boss won't come when she doesn't feel like to, so it's a waste if you use crystal outside rune time.