What are Frontier Coins used for? Alex Minor March 28, 2018 23:08 Updated Frontier Coins are usable in the ‘Frontier’ tab of the LOTB shop to purchase Character Souls, Skill Shards, and Mythic Souls. You earn 100 Frontier Coins for every Eternity Soul, Trooper Soul or Lilith Soul opened. Related articles Can I play on multiple devices and will it save my progress? What are Eternity Soul Fragments? Comments 0 comments Please sign in to leave a comment.