What is your opinion on the possibility of introducing a third tier of maps and a new faction into the game?

..4. Child of Sebek – Sebek Warrior (main weapon – teeth; with a certain number of "Sebek Warriors" in the stack (equal to or greater than the number of units they are attacking), there is a 20% chance to bite an opponent of levels 1-4 in half (the number of creatures in the stack is reduced by half), and deals double damage to other creatures compared to normal);

And yet, I would still like you to change the ability. Because a hero with luck and soldier's luck will, in 60% of cases, attack monsters of levels 5-7 with these crocodiles, dealing four times the damage, if there are more of them in the stack. And there are usually more units of level 4 than levels 5-7.
As an alternative, I suggest calculating based on the ratio of the total hit points of the stacks, rather than the number of units in them.
Or, I suggest halving not the number of creatures, but their hit points. Approximately like the spectral dragons in Heroes 3.
And the chance should not be HIGHER than 10%, otherwise it will always be a death blow.