Examples of how to conduct complex battles (detailed turn by turn). Everyone must read this!

Hello everyone, I read the posts and couldn't find how to deal with the Naga Bank, so here's an example for variety:
Minimum Naga Bank: 2 Royal Nagas and 8 regular Nagas.
We have a level 3 Shakti with advanced attack and 118 Trolls. Ideally, there should also be Harpies and troops from 3 heroes, but without them.
Speed: The upgraded Nagas move first (7), then all our Trolls (6), and the regular Nagas have a speed of 5.
Formation: Place one Troll each, and the main stack under number 2.

Round 1.
The Royal Nagas cannot reach the main Troll stack; they attack the central unit, number 4.

I tested this setup several times. I took the save from a real game. In the first turn, the upgraded Nagas always kill unit number 1, so there's nothing to retaliate with, but the main Troll stack still usually kills the upgraded Naga stack. But it's still better to have more Trolls, at least ten more. Next, it's very important to position unit number 3 correctly, two squares from the left edge; otherwise, the Nagas from the upper left corner will bypass it and attack the main Troll stack. Then, if the Nagas don't get morale boosts and the Trolls deal maximum damage, the Nagas will fall one by one, and the losses will be only 15 Trolls. But if you're not lucky, you'll lose half the Trolls, and you might even lose, but that's only if you're really unlucky and the Nagas get morale boosts in a row.