Dark energy

Dear friends, I would greatly appreciate it if you could post a table showing how the Hero's Magic Skill points are calculated, taking into account the level and Necromancy skill. It's unclear how many points are awarded to the Hero. P.S.: I noticed a strange bug, perhaps it's just happening to me. When the Hero reached 1000 Magic Skill points, after the very first battle following the refusal to pick up unnecessary zombies, the Magic Skill points were reset to zero. Before the Hero reached 1000 points, this problem did not occur.