Nature Structures

Well, there are also elements and flowers.
As for the first strike, it's still not quite right. Many units have it, and many can block it.

In my experience, only two block it – the pikeman and the goblin knight, the champion, and maybe the mantis, perhaps someone else, but I don't remember, and not that many have it anyway, some do, but it doesn't matter. Tigers are good for clearing mines and the like; in a general battle in the later stages of development, they are not very effective, although it depends on the situation.)

Added 6 minutes later

No, an elf is needed in any case. Almost the only ranged unit (if you count the aerial units). And tigers may not even reach their target and become real meat. Especially if the opponent has a slowing effect (like Order), especially a general one. And the druid, as always, will clearly not have time to speed up the tigers. He will either cast blessings on unicorns (or griffins) or, MOST LIKELY, be busy summoning.

The elf is sometimes very and very useless; he is not a very good ranged unit, even though he shoots twice. If he doesn't have a direct shot, he deals little damage, and if he does, it means the enemy unit is close and can finish off the elf. The elf, like the tiger, is good for clearing neutrals, but if very fast ones appear, the elf is doomed. P.S. Nature has a general speed boost + general luck, and then the question is, who is the meat, the tiger or its opponents?