This is why i went after the Elites needed for a quest. There are a few quests where you have to kill xxx champs..... in those cases, they are plentiful. Same with the Skeletal Warriors, sometimes there were 3 on 1 square. And, remember AM DOES in fact work on Champs. It also works on the handful of Elites where you have to kill more than one for a specific quest.
These daily quests are intended to be a little added fun to keep us interested while our stam builds. I think folks are trying to overcomplicate them, wanting big rewards like a regular quest, or an easy button. I know, some tweaking needs to be done, but Hoof also knows this, I'm sure.
I'm not saying that you aren't offering some constructive criticism, because imo, you are, I just wondered why you tried to go after a hard to find/kill beast is all.
At least you aren't complaining that the little reward isn't enough or demanding something complicated. We have regular quests and (ugh, so boring) Titan hunting for that 
Well, answering your question. There is no information about which Champion is easy to find. Of course I made some mistakes, this is on me, but I was trying the new addition to the game. Here is what I did:
1) First I tried to find some Champions at my level or below so I could level up and finish the task. Obviously it did not work well.
2) Then I searched the wiki for some Champion at least half my level and in a realm with less creatures of different classes (Avian, Human, etc...). The best place according to my requisite was Emerye (North). Other aspects helped define this realm: near a Master Realm, near other areas with Champions, the format of the realm.
Some considerations:
1) I had no information about spawning information
2) if you can 1-hit kill, then the level of the creature is not much important, as you still waste 1 stamina, right? So the realm I was in would be the same of the realm you suggested, except for the re-spawning of the Champion.
3) even if I had used a better Light Foot, still I had the chronometer against me, because I had only 3 hours, a bit more than half my maximum stamina; I cannot play the game for more than one and a half hour everyday, but I can peek the game many times a day. For more complex actions only on weekends and I am not at the server's time. So, I have a small window.
4) other mistake I made was to use Doubler as it does not work, and I realize it after killing ten Champions
And yes, I am just trying to help if I can. I play the game for free, for fun. For me the idea is great as I can keep doing my things (leveling up, for instance) and getting somethings else (for free) in the process. Just like today: level up and walking 200 tiles. Perfect!
Hey, I really appreciate your comments. I am still learning the game and this is the best part of it: the relationship with other players, even when they attack me for nothing.
Cheers!
Edited by MSCruz, 03 September 2016 - 15:35.