Every other legendary champ I have on my account has at least one place where I use him. But I didn't find a reason to build these two so far.

It seems to me Garog is supposed to be an arena nuker. But I allready have Magnarr and Vlad who can do that job. Does Garog really hit harder than they do? And is it worth the effort to build a third arena nuker? I have some more champs that can hit, for example Ninja, Sinesha, Ghostborn. Maybe they don't hit as hard as Garog does, but making a new lvl 60 only for a small increase in the third Tag Arena team? Is there any other place exept arena where you would use King Garog?

Kantra can put out a bunch of Debuffs, but you can't control wich one. What is the function of this move? Of course that fits to a slot machine game, put any random debuff on the enemy, and if you are lucky it may be a usefull one. Is there any place in the game where you really use that champ? 

I've seen a video that Kantra is a good off affinity tank in Spider 20, because her base stats are so insane and loading all that debuffs on the Spiderlings decreases their acc from the passive, so they won't land their poison. Ok, fine. But I have Drexthar as off affinity tank for Spider 20. Putting hp burn on the spiderlings while taking the hits seems more usefull to me than just taking the hits.

It's not the case that I hate that champs, I want to use them. But where? Like I said, I found a place for every other legendary, even Teela Goremane. Ash made a video about the worst legendaries in the game, and she won the price - but I use her in Spirit and Magic Keep and think she is really usefull here. The video was made before the keeps got stages higher than 15, maybe Teela wouldn't be chosen as worst legendary champ of the game anymore. But back to Kantra and Garog: where do I use them?