Some time after entering the Abyssal Region, Minos was arriving at the location of the fourth vacant throne he had negotiated with Lydis earlier.
After the initial success with the Throne of the Law of Death, Minos and his group conquered two other thrones—the one of the Law of Molecules and the one of the Law of Heat.
The first was much more compatible with Minos' wives' powers, so he kept this throne for his inheritance, while the second he was saving to hand over to Lydis and fulfill their agreement.
Conquering the two previous thrones was an arduous task for Minos. The one with the Law of Heat, in particular, had tested him in both extremes, heat and cold.
Lily and Devdar even thought he would fail that test, having for a moment seen his time hourglass freeze and explode.
Fortunately, Minos could control small fragments of time. By reversing the situation, he defeated that throne oppressively and without any openings!