Eight Heavens Sadhana is a 
Shendao Law specialized in Battle Spells. It is considered the weakest of the Shendao laws.
Method of Acquisition[]
Eight Heavens Sadhana can be acquired as a reward from reading 
Ancient Scrolls with a 5% chance.
The Third Golden Casket has an option for an item to provide all 3 Shendao Laws.
Stages[]
Celestial Thunder Salvation Sutra has 6 stages.
Ascetic (State 3, Ascetic State)[]
Total amount of cultivation required to reach the next stage: 5 000
- State has a single Neck at 100%, Devotion, a regular breakthrough
Preaching (State 6, Pilgrim State)[]
Total amount of cultivation required to reach the next stage: 35 000
- State has a single Neck at 100%, Creation, a Divine Realm forming breakthrough.
Sushruta (State 7, Divine State)[]
Total amount of cultivation required to reach the next stage: 10 000 000
State has three Necks:
- At 30%, Edict: Gandharva, a regular breakthrough, which on success grants the following Guard:
- Gandharva
- At 60%, Edict: Kinnara, a regular breakthrough, which on success grants the following Guard:
- Kinnara (worshiping this guard grants the Spell Tranquility)
- At 100%, Edict: Garuda, a regular breakthrough, which on success grants the following Guards:
- Garuda
Ferocious (State 8, Divine State)[]
Total amount of cultivation required to reach the next stage: 20 000 000
State has three Necks:
- At 30%, Edict: Mahoraga, a regular breakthrough, which on success grants the following Guard:
- Mahoraga (worshiping this guard grants the Miracle Meditation of Unification)
- At 60%, Edict: Yaksha, a regular breakthrough, which on success grants the following Guard:
- Yaksha (worshiping this guard grants the Spell Curse of Yaksha)
- At 100%, Edict: Asura, a regular breakthrough, which on success grants the following Guard:
- Asura (worshiping this guard grants the Spell Sword of Asura)
- Edict: Asura is also the breakthrough which grants the additional Divine Realm buildings (Tree of Prayers, Temple of Glaze, and Temple of Faith)
Supreme (State 9, Divine State)[]
Total amount of cultivation required to reach the next stage: 30 000 000
State has three Necks:
- At 30%, Edict: Naga, a regular breakthrough, which on success grants the following Guard:
- Naga (worshiping this guard grants the Spell Dragon's Roar)
- At 60%, Edict: Deva, a regular breakthrough, which on success grants the following Guard:
- Deva (worshiping this guard grants the Miracle Meditation of Divinity)
- At 100%, Transcendence, a regular breakthrough, which on success grants the Core Follower Residence Divine Realm buildings
Attainment (State 12, Attainment State)[]
Total amount of cultivation required to reach the next stage: 1
State has a single Neck at 100%, Supreme, which is the peak of Shendao cultivation
Law Specific Aspects[]
Achievements[]
The following Achievements are related to Eight Heavens Sadhana:
- Prayer: Eight Cosmos
- Learn Sutra of Eight Cosmos.
- Creation: Eight Cosmos
- Establish a Divine Realm using Sutra of Celestial Thunder.
- Attainment: Eight Cosmos
- Achieve the maximum size possible when establishing Divine Realm using Sutra of Eight Cosmos.
- Ascension: Eight Cosmos
- Ascend by studying Sutra of Eight Cosmos.