I thought that "Intimidation" is a really smart move against the AI when your army consists only of elite creatures. That is, for 4 turns, you beat them, and they just stand there and can't do anything, not even retaliate. But a human player will cast "Dispel Magic" and will still attack with their elite creatures.
If a human player casts "Dispel Magic," that's also not bad; they'll spend a turn and mana on it.
The nuance here is that you need to decide at the beginning of the battle when to use "Intimidation." Because in large-scale battles against AI players, it makes sense to take advantage of the elite counter-attack on the first turn, so the first move could be a war cry for defense and an additional counter-attack (lords will have 3 counter-attacks, and even before the enemy attacks). Or immediately cast "Drain Life."
In the case of taking out tough neutral creatures with a single strike force without support, "Mockery" also works well.
And also, "Intimidation" and "Mockery" don't seem to work on undead. And playing against a human in a single stack is suicide: "Time Stop" and then "Al-Ula"...