This was fun, so I made a few more:
(Unit name: Moon Beast. Cost 25 gold, 5 resources. Hit Points 16, Size 3, Protection 0 (0 Natural), Morale 9, Magic Resistance 12, Encumbrance 2, Fatigue 0, Strength 16, Attack Skill 9, Defense Skill 9, Precision 6, Move 2/9, Leadership 20). Weapons: Moon Trident (As per normal trident, but magical, and does x2 damage to magical creatures). Armour: None. Blind, True Amphibian, Magic Being. Strength in Darkness (1). This unit should be copied over from one of the new Atlantean units that are immune to R'lyeh insanity.)
(Unit name: Man of Leng. Cost 25 gold, 5 resources. Hit Points 10, Size 2, Protection 4 (0 Natural), Morale 12, Magic Resistance 12, Encumbrance 2, Fatigue 0, Strength 10, Attack Skill 11, Defense Skill 9, Precision 10, Move 2/12, Leadership 20). Weapons: Dagger, Dagger. Armour: None. Awe (0) Ambidextrous (4) Stealth (0). This unit should be copied over from one of the new Atlantean units that are immune to R'lyeh insanity.)
Name: Dylath-Leen
Path: Astral 4
Terrain: Coast
Freq: 2 (rare) Unique
Recruitables: Pirate
Recruitable Commanders: Navigator, Captain.
Gems: 1 Blood Slave
Gold/resource Bonus: (none)
Scales: (none)
Name: Nameless Rock
Path: Astral 4
Terrain: Coast
Freq: 2 (rare)
Recruitables: Moon Beast
Recruitable Commanders: Moon Mage
Gems: 1 Fire Gem
Gold/resource Bonus: 25
Scales: (none)
Name: Ygiroth
Path: Astral 4
Terrain: Mountains
Freq: 2 (rare) Unique
Recruitables: Man of Leng
Recruitable Commanders: Mystic, Crystal Mage
Gems: 3 Astral
Gold/resource Bonus: (none)
Scales: (none)
Name: The Ruins of Ib
Path: Astral 4
Terrain: Sea
Freq: 2 (rare) Unique
Recruitables: Moon Beast
Recruitable Commanders: Aboleth
Gems: 1 Astral
Gold/resource Bonus: (none)
Scales: Misfortune
Name: Plateau of Leng
Path: Astral 4
Terrain: Mountains
Freq: 2 (Rare)
Recruitables: Man of Leng
Recruitable Commanders: Mystic
Gems: 1 Astral
Gold/resource Bonus: (none)
Scales: Cold