Shock skill trainer

I was wondering where's the first trainer in Factions that has the skill Shock for sale?

Wiki shows no one in factions has it
available at ;
Mazzim (Fishermen's Haven)
Tengsao (The Amnoon Oasis)
Dakk (Ember Light Camp)

Shock is a Prophecies-only skill, so it will not be found in Factions.

So i was thinking, how could one get the skill ?

I have prophecies but do i need to travel back there with my factions character ? Or can i just unlock the skill with my prophecies character ?

What are you wanting to use it for? Just for PvP? then yes, just unlock with a prophecies character, buy it with balthazar faction or that your canthan into tyria to get it.

Oh i was thinking of using it for my PvE Character.
I have already unlocked it with my other prophecies character.
Do i need to go to the various prophecies skill trainers or can i just obtain it from a factions skill trainer ?
How come i see some (unlocked) skills in the factions skill trainers ? Can i obtain shock this way too ?

If you have it unlocked already you can buy the skill from any trainer in Tyria.

Thanks did it !!