Ad aspera

Alex, let me draw a simple map for you. It’s very inconvenient to keep everything in my head.

That would be great. I’ll find where I drew mine or I’ll create a new one and send it to you.

What should the elves fight with? Magic or wooden spears?

With their fists. And also in leather armor, if you know what I mean...
If we’re talking about the default, then with bronze. Ideally, with celestial, also known as meteoric, metal. Bows and light crossbows are fine.

Is it a bug or a feature that the cost in mana is not indicated for traditional magic and some abilities of other schools?

For traditional magic, it’s a feature. For transformation, it’s a bug. For creation, it depends on the request. Golems, absorption, and skeletons are free. Skeletons are raised outside of combat; if a golem falls apart, a new one can only be created between phases.

How flexible is the transformation from necromancy? Can a conditional elf turn into a massive barbarian?

You can transform into humanoid races. That is, she can turn into a healthy man, but she cannot grow fur.
Perception, by the way, is not considered a physical attribute.

Does leadership work on skeletons?

No.

Are skeletons counted for features like legionnaire?

Yes.

In your system, does initiative only determine the turn order, or does it work similarly to the latest Revan games?

Only the turn order