Bilgewater
9 champions. Bilgewater Star Crystals, Nova Crystals and Gemstones upgrade the constellations of 5 of them.
Gold ring = upgrades with Bilgewater crystals and Gemstones.
Bilgewater Star Crystals adventures ≈ 100 · each champion needs 50
- 3★ The Deep Voice Below the Waves 3★ World #4 · clear with a Targon champion
Silver Star Vessel - 3★
The Collector of Souls 3★ World #4 · clear with a Shurima champion Silver Star Vessel - 3.5★ The Ancient Fear 3.5★ World #7 · clear with a Noxus champion
Gold Star Vessel - 3.5★
The Grand Heist 3.5★ World #7 · clear with a Noxus champion Gold Star Vessel - 4★
The Star Forger 4★ World #6 · clear with a Shurima champion Silver Star Vessel - 4.5★ The Tidal Trickster 4.5★ Nightmare #5 · clear with any champion Gold Star Vessel
- 5★
The Frost Witch 5★ World #15 · clear with a Shadow Isles champion Gold Star Vessel - 6★ The Deep Voice Below the Waves 6★ Nightmare #1 · clear with any champion Gold Star Vessel
- 6★ The Deep Voice Below the Waves 6★ Nightmare #2 · clear with a Bilgewater champion Gold Star Vessel
- 10★ With Friends Like These... 10★ Nightmare #22 · clear with a new champion Gold Star Vessel
Legend Levels 70 and 91 also give a Bilgewater Gold Star Vessel. All Legend Level rewards.
Bilgewater Nova adventures ≈ 3.3 · each champion needs 1
- 10★ With Friends Like These... 10★ Nightmare #7 · clear with a new champion 1 Nova Crystal
- 10★ With Friends Like These... 10★ Nightmare #23 · clear with a new champion
50 Nova Shards
Bilgewater Gemstones adventures ≈ 700 · each champion needs 1000
- 3★ The Deep Voice Below the Waves 3★ World #5 · clear with a Bandle City champion 100 Gemstones
- 6★ The Deep Voice Below the Waves 6★ Nightmare #3 · clear with a Bilgewater champion 250 Gemstones
- 10★ With Friends Like These... 10★ Nightmare #41 · clear with a new champion
Major Gemstone Vessel - 10★ With Friends Like These... 10★ Nightmare #52 · clear with a new champion 100 Gemstones
Gemstone Vessels also come from the Glory Store (pick Bilgewater), the Emporium and Legend Level 74; regional Gold Star Vessels from the Glory Store and Legend Levels. All sources.
Rewards your Bilgewater champions can claim
Adventure rewards that need a Bilgewater champion to clear the adventure.
- 2★ The Spear of Vengeance 2★ Blossom #1 · clear with a Bilgewater champion
50 Spirit Blossom Ahri Fragments - 2.5★
The Machine Herald 2.5★ World #2 · clear with a Bilgewater champion 
Silver Reliquary - 2.5★ The Machine Herald 2.5★ World #5 · clear with a Bilgewater champion
Platinum Vault - 3★ Daughter of the Void 3★ World #4 · clear with a Bilgewater champion Silver Star Vessel
- 3★ The Deep Voice Below the Waves 3★ World #1 · clear with a Bilgewater champion 40 Illaoi Fragments
- 3★ The Dragonsire 3★ World #8 · clear with a Bilgewater champion Gold Star Vessel · random region
- 3★ The Tidecaller 3★ Blossom #2 · clear with a Bilgewater champion 20 Star Crystals
- 3.5★
The Colossus 3.5★ World #4 · clear with a Bilgewater champion Silver Star Vessel - 3.5★ The Ancient Fear 3.5★ World #2 · clear with a Bilgewater champion Gold Star Vessel
- 3.5★ The Grand Heist 3.5★ World #2 · clear with a Bilgewater champion Gold Star Vessel
- 3.5★ The Bounty Hunter 3.5★ Teamfight #2 · clear with a Bilgewater champion
Gold Vault - 4★ The Star Forger 4★ World #4 · clear with a Bilgewater champion Silver Reliquary
- 4.5★ The Tidal Trickster 4.5★ Nightmare #1 · clear with a Bilgewater champion
20 Wild Fragments - 4.5★ The Tidal Trickster 4.5★ Nightmare #2 · clear with a Bilgewater champion Platinum Vault
- 4.5★ The Wrath of Zaun 4.5★ Arcane #4 · clear with a Bilgewater champion Gold Vault
- 5★ The Frost Witch 5★ World #7 · clear with a Bilgewater champion Gold Star Vessel
- 5★ The Relentless Storm 5★ Titans #5 · clear with a Bilgewater champion Gold Vault
- 5.5★ The Card Master 5.5★ Rogues #5 · clear with a Bilgewater champion Gold Vault
- 6★ The Deep Voice Below the Waves 6★ Nightmare #2 · clear with a Bilgewater champion Gold Star Vessel
- 6★ The Deep Voice Below the Waves 6★ Nightmare #3 · clear with a Bilgewater champion 250 Gemstones
- 6★ The Deep Voice Below the Waves 6★ Nightmare #4 · clear with a Bilgewater champion
300 Glory - 6.5★ Scourge of the Pit 6.5★ Teamfight #6 · clear with a Bilgewater champion Gold Vault