Master of the Abyss
"In hubris did mages cast down the Gods. They did not die; they have slept long ages in the darkness beyond time and space. That which has risen may fall, and that which has fallen may rise again, and when it rises, it shall do so as I command. I call forth the Abyss as a man calls a dog, and I abase myself before it's obsidian majesty. It is the prison of humanity and my home, and I stride its endless lengths as a prince. Tis better to Rule in the Void than to Serve in the Supernal."

Forge Ruin
Practice: Making
Action: Instant
Duration: Prolonged
Aspect: Covert
Cost: None

Transforms an area into a Ruin. Within a Ruin, treat all magical effects as if they were cast within the Abyss, without any of the benefits. Namely, any magic used in the Void is treated as being Vulgar with Witnesses, and the Paradox Pool is rolled with the 8-again property.

Tread the Supernal
Practice: Making
Action: Special
Duration: Lasting
Aspect: Vulgar
Cost: None

Having ultimate mastery of the Void, you may at least attempt to reach the far shore of the Supernal and, as mages did once before, tread the realms of pure magic in the flesh.

Such an effort is fraught with danger, as it entails crossing the infinite breadth of the Abyss. It requires the mage first cast Walk Without Fear to reach the border between the Abyss and the Supernal. It then requires 50 successes, rather than 5, on the prolonged Intelligence + Occult roll to navigate the Abyss. It is this ultimate lure that tempts many otherwise good Mages into studying Abyssal magic, as it provides a shortcut around the dangers of building a second Celestial Ladder.

It is unknown if a mage who reaches the Supernal can return, or if they simply chose not to. What is certain is that nothing has been seen or heard from again of the few mages that have made the effort.

Darken Soul
Practice: Unmaking
Action: Instant and contested; target rolls Resolve reflexively
Duration: Lasting
Aspect: Vulgar
Cost: 1 Mana

Either kills a Sleeper, or permanently prevents them from ever Awakening.

With Archmastery of the Abyss, it may be possible to use Darken Soul on the Awakened.