Defense:
Magni - Sartana - Justice - Khiona - Azlar
Offense:
Wilbur - Khiona - Khagan - Azlar - Sartana (recommending a 3-2 combination against green or yellow tanks)
I like Azlar too much so I always recommend Azlar especially if you have Wilbur
Defense -
Magni - Khiona - Justice - Sartana - Grimm
Offense for me depends on who I’m attacking, I change every time. The suggestion above is really good if you choose tank color.
What’s the thinking behind Azlar in the corner?
My fav reply.
Right wing heroes are the ones to change the tide of the raid for you. By the time they fight, your middle 3 are usually dead. Heavy AOE hitters have a chance to reverse the situation in your favor.
But what if it’s an even battle, so you’ve lost three and the attacker has lost 3 say. Then you’d prefer a fast sniper there right?
If I was fighting Azlar in the corner, and the center 3 were dead, I just wouldn’t charge his mana and focus on ghosting in the middle. Then hit him with sniper fire. This is less easy to do if he’s on the flank.
Given how game changing Azlar’s special can be, wouldn’t you want to maximise the chances that he fires, and so place him closer to the center given he’s slow.
I’m still learning the game, only 4 months in, so these are genuine questions, not arguments.
Looks like both suggestions are focused on defending against mono purple stacks by flanking a yellow tank with purple heroes, and that strategy pushes Magni and Azlar to the wings. Honestly, though, I think this just opens up a vulnerability to a purple-yellow 3-2 stack, which I’ve used on similar-looking defense teams with good success.
The best thing you could probably do is try out different arrangements of those heroes for a few days each and see how your cup count fluctuates. Whichever keeps your count generally higher would be the one to use. 
Sarta Mele Khaga Kash Magni
Most would think that way. For him to fire early = for him to die early. Too much focus fire on him.
I like for him to stay quiet in the corner and let my opponent focus on my middle 3.
Even if both sides have 3 men down. The chances of the attacker winning is higher. And also if by chance Azlar fires in the corner, it’s almost instant victory.
There is no sure win but I like to defend that way and it works for me at least.
Thank you all lots to think about