The Nine Titans was a group of planeswalkers Urza brought together to attack Phyrexia.
Its members were:
In the first draft, Teferi and Parcher were elected to be in the group of Nine Titans. Teferi changed his mind though, and phased himself and his lands out of the time stream instead of joining. This led Urza to accept Taysir's demand that his stepdaughter Daria would join. Later Freyalise insisted that Kristina would come along, apparently just to spite Taysir, and Urza agreed, dropping Parcher, whom he thought was a bit too crazy anyway.
Depicted in: