Hybrid Incident

The Hybrid Incident was the Time Lord designation for the event in Davros attempted to create the Hybrid on Skaro. (TV: The Magician's Apprentice/The Witch's Familiar, PROSE: Dalek Combat Training Manual)

A day to come
Through the projections of the Matrix, the Time War-era Time Lords learnt that the Twelfth Doctor had tried to demonstrate mercy to a young Davros. Through this, they saw that he had shown some way of circumnavigating the Blinovitch Limitation Effect, allowing him to return to an exact space-time event multiple times and influencing the outcome of that event. Investigations were undertaken as to how the Doctor was able to achieve this, and discussions took place at High Council level to determine whether they constituted a breach of the First Law of Time. The Time Lords believed that the Doctor had failed in his mission, as they could find no evidence that any Daleks in their current relative time zone had any understanding of mercy. (PROSE: Dalek Combat Training Manual)

Aftermath
Having survived the incident, Davros recorded a "whole and true study" of Dalek history and science to ensure their purity and survival in case he ever died. In this study, he wrote that he was still connected to the life force of every Dalek, but that he had the stolen regeneration energy, making him question what may be possible in the future. He concluded his discussion by once again stating that his children were the ultimate form of life and that all other lifeforms needed to be exterminated. (PROSE: Secrets of the Dalek Laboratory)