Use it to combine the Soul of the Void with the 10 Conjuror's Pendants. Kill the Void Seeker that spawns and the Invocation Rune is yours.

The update also gives you an opportunity to Drift Tune 3 new vehicles- the Karin Futo, Dinka Jester Classic, and RUNE Cheburek ... Snake Soul Pendant, Snake King Pendant, Red Snake Soul Cap ...