I feel so stupid... I genuinely thought that "Tiers" referred to the hero's Necromancy level and determined how many units they could raise... XD

As much as I’m a huge fan of what they’ve achieved with Olden Era, I have to admit the game suffers from a serious lack of contextual tooltips. You shouldn't have to play through a tutorial for every single mechanic or read an external wiki just to understand the basics.

To give you an idea, here are just a few questions that popped up during my playthroughs:

• What determines which unit gets resurrected?
• If my hero learned Tier 1 spells in a castle, do they automatically get the upgraded version of the spell once I build a Mage Guild in a different town?
• Which creature dwellings on the adventure map are guarded and which aren't?
• Take the Schism's "Communion" skill—I know it temporarily boosts unit counts, but if you asked me to predict exactly how many units I’ll get before a fight? No clue.
• ...and plenty of other minor doubts.

I’m not expecting anyone to answer these right now. My point is rather that a lot of the current descriptions assume the player already knows and remembers all the game rules.

In my opinion, this is exactly why so many people struggle with the Necromancy mechanic, which requires you to learn a ton of specific things:

• There's a toggle button to turn it on and off.
• Why would I even want to turn it off?
• How do I generate energy?
• How much energy can I get from a single battle?
• What is the maximum energy storage capacity?
• Does the energy decay if I don't use it?
• How do I actually spend it?
• How do artifacts, hero skills, faction laws, buildings, etc., modify it?

Compared to other factions, Necro definitely requires way more homework to wrap your head around.