Lineage Piece Keys Guide: Every Key & Which Door It Opens

Every Key and Its Source

• Trial’s Key — bought from the Portal Key Seller (1 Boss’s Soul + 75K coins, or 750 gems). Opens artifact portals (artifact guide).
• Cid’s Key — Dawnwind Village bandits, 0.5%, after finishing Cid’s quest; or 8 Tower Shards at the Tower Shop. Opens Cid’s Castle.
• Shrine Key — Snow Bandits (Lv.600), 1%; or 5 Tower Shards. Opens the Plane of Euthymia (Raiden’s dungeon).
• Cartenon Key — Sung Jin Woo boss, 60% — effectively guaranteed farm. Opens Cartenon Temple (Shadow Monarch content).
• Absolute Ether Key — opens Absolute Dead End (Miyabi’s dungeon).
• Scatthen Key — Quincy mobs (Lv.5000), 1%. Opens Wandenreich (Yhwach’s dungeon).
• Ryuudo Key — opens Ryuudo Cave (Saber Alter’s dungeon).
• Glamoth Planet Key — opens Glamoth Planet (Firefly’s dungeon).
• Butterfly Grave Key — from Angela NPC. Opens The Butterfly Grave (Solemn Lament’s dungeon).

The Tower Shop Shortcut

The Tower Shop converts Tower Shards (earned per cleared floor) into keys: 5 shards → Shrine Key, 8 shards → Cid’s Key. If you run the Tower daily anyway, this out-paces the sub-1% drop farms.

Which Keys to Stockpile

Whatever dungeon your next unlock needs — check the dungeon drop tables and work backwards. Cartenon Keys arrive faster than you can spend them (60%); the painful ones are Shrine and Scatthen at 1%, so bank those whenever they drop rather than farming them on demand.