Heaven's Mandate Pill can make a cultivator not worry about the Lightning Tribulation. Even though the latter pill could only increase the success rate of the ascension by 10 percent, it was very huge for a cultivator.
Soul Protection Pill can protect the soul and as long as a cultivator's soul is alive, it could condense a new body to have a go at the Lightning Tribulation for the second time.
The last pill, Emperor's Enlightenment Pill, could give an opportunity for the cultivators to directly awaken a Divine Rule.
Therefore, Ajax felt that once he could start refining these three pills, he could become invincible and with time, he could create a powerful force in the universe.
"Soul Protection Pill requires Soul Protection Fruit, Astral Sea Salt, Soulguard Root, any Sentient Flame and a huge amount of Essence of Nature. Astral Sea Salt and the Soulguard Root are costly; however, they are not rare as I have seen them in the Auction Halls a few times."