All Prestige skins can drop randomly from loot after they’ve been retired from an Event or Prestige Point Shop, just like other Mythic Skins. The drop chance is very, very small but it is possible to receive a Prestige skin from a Hextech Chest or other loot-related item (like Orbs or Capsules). Other than the loot system, we don’t currently have any plans to bring back retired Prestige skins.

By the way, we’re adding some new ways to earn Prestige Points. You can check out the details here.