Most Planeswalkers have their spark ignited as the result of a great crisis or trauma, but every awakening is different.
A near-death experience might ignite a Planeswalker’s spark, but so could a sudden, life-changing epiphany or a meditative trance that enables the mage’s grasp of some transcendent truth.
It takes up very little computer power, and should never cause you to experience any lag except maybe while it's in the process of copying the new files. It must be in a folder (meaning not directly in a root drive such as "C:\Utility.exe"), and it can't be in your Windows folder or your Program Files folder.
The way it all works makes simply adding another one at the end a bit infeasible.
The Blind Eternities are a chaotic, logic-defying place of quasi-existence filled with raw potential called Æther.