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titans or dragon golems?
TITANS are very strong if you buff their accuracy and, on top of that, protect them with heroes, placing them in the seventh position in a close formation so that they are not targeted by ranged attacks.
But they are easily enchanted and, for example, can be completely destroyed with a sacrifice spell.
And GOLEMs have some resistance to magic... and also an absolute first strike, so if there are many of them, you can destroy entire stacks without worrying about retaliation, but you have to wait until there are many of them...