Quests and puzzles!

Tazar, level 108, and a Potion of Life

Well, considering the potential unpleasant consequences of the overflow bug, it's better not to delve too deep into such scenarios! :) Besides, how often do you see a Tazar at level 108?;)
I did remember about the Potion, but in this case, it's better to avoid the Ifrit coming into contact with the dragons.

If you calculate how much time this battle will actually take, the Ifrit will most likely die of old age.

Or even the player! :D

heroes13, considering the length of the battle, it's better not to bother with slowing down the enemy, but rather choose a suitable battlefield. The fact is that this example with 9999 Crystal Dragons is purely artificial, but in general, situations where you need to avoid contact with a powerful army and beat it with powerful spells are quite possible. And it's too tedious to constantly cast slow (and renew it in time!): one "lapse" - and the battle can be "lost"! :(
And sometimes, with summoning elementals, my secondary hero, a mage with no army, could grab valuable artifacts by overcoming serious defenses: the elementals fight, and you just laugh; no losses, as long as you have enough mana! It's just important not to let them kill (sometimes the only) living unit.

Yes, by the way: if anyone doubts that there can be a situation where 2-hex units, due to obstacles, cannot reach a 1-hex enemy stack, then I saw an example online with a screenshot where 1 Harpy Witch, over a couple of hundred rounds:) can defeat a legion of monsters on such a battlefield (unfortunately, I can't find it from memory, but you can take my word for it)).