Ancillary Power Pools Question

[WhisperXer]

Good afternoon all, I'm a bit confused on the whole Patron/Ancillary powers and how to get them. I know for ones like Soul, Leviathan you have to complete the arc on the villain side but is that for all powers? I want the electric mastery but I can't seem to find out how exactly to do that. The info I have on this is from the CoH wiki, which not only might be outdated and/or wrong but it also doesn't say how to get them all, only a select few. I really don't want to change to a villain and do story arcs if it's a waste of time ya know? Any help would be greatly appreciated! :-)

[subbacultchas]

It requires a single villain patron arc to unlock ALL villain patron powers. You also get a badge, merits, and a respect out of it.

[MTeague]

Limitations: 

• you cannot have an Ancillary Power Pool AND a Patron Pool on the same character at the same time.  You can respec back and forth, but you cannot choose both at once.  (This may be why you're not seeing an option for Electrical Mastery)
• Widows and Soldiers can never choose Ancillary Power Pools, ONLY Patron Pools.
• Peacebringers and Warshades don't get either one.   
• Many may chafe at these limits, but that is the way it's coded.

Patron Pools: 

• are the same pools.... Mu Mastery, Soul Mastery, Leviathan Mastery, Mace Mastery. 
• Exactly which powers you get varies by Archtype.  
• these all require a story arc to unlock (Begins at Arbiter Rein in Grandville). but once you do any one of arcs, that means that character can choose from any Patron Pool during any respc.
• https://hcwiki.cityofheroes.dev/wiki/Patron_Power_Pools

Ancillary Pools: 

• Not every archtype is going to have "Electrical Mastery" as an option.  So does depend on your AT.
• They become available at lvl 35 (unless you're a widow/soldier/peacebringer/warshade, or already chose a Patron Pool)
• https://hcwiki.cityofheroes.dev/wiki/Ancillary_Power_Pools