Before the Herald stops him at Redcliffe, Alexius decides that the smartest way to beat Trevelyan is to go back in time before the explosion at the conclave and kill them before they even become the Herald! No Herald, no threat. Problem solved.
Except when Alexius returns to his present his lackies tell him that the Herald is here for the meeting, just like they arranged. Que Alexius going 'WTF? I JUST killed them!' Instead of the Herald Trevelyan like it was in the first timeline, it's Herald Lavellan.
So Alexius goes back again, finds Lavellan at the conclave, kills them, returns to the present, and now there's a dwarf Herald?! (whichever order/race/gender/class doesn't matter. The more the merrier!)
Tl;dr: Alexius goes back in time to kill the Herald but one of the other origins survives the conclave and becomes Herald of Andraste instead. Repeat as necessary.
Time travel
Except when Alexius returns to his present his lackies tell him that the Herald is here for the meeting, just like they arranged. Que Alexius going 'WTF? I JUST killed them!' Instead of the Herald Trevelyan like it was in the first timeline, it's Herald Lavellan.
So Alexius goes back again, finds Lavellan at the conclave, kills them, returns to the present, and now there's a dwarf Herald?! (whichever order/race/gender/class doesn't matter. The more the merrier!)
Tl;dr: Alexius goes back in time to kill the Herald but one of the other origins survives the conclave and becomes Herald of Andraste instead. Repeat as necessary.
http://dragonage-kink.livejournal.com/15866.html?thread=60741882#t60741882