Yes, this is a very effective tactic to avoid losses. For example, I always deploy only invisible units against archers. And while they are running to the enemy, I eliminate him with Chaos magic. And the invisible units only have to finish them off. The result is that I manage to avoid losses, even in situations where no other race could.

Doesn't it get boring to lose gold by changing units from one upgrade to another? The Dark Elves only have two archers, and if you turn both of them into invisible warriors, it won't end well for the Dark Elf army! I like having two on level 4! Like a Druid archer! His lightning deals more damage than the magic fist of the mages and has a stronger attack than the succubus! And among the attacking units, the Dark Riders! They have a super-fast charge and also a lizard bite! It's great to attack with a minotaur if a lizard is nearby! That's awesome!:rolleyes: