I tried it, and it works, but not everything. Stats are added, but effects like a bonus of 500 experience per day and ±500 gold per day don't work. Also, after finding the components for the Armageddon Blade, I didn't understand how I was supposed to combine them into one.
Added 1 minute ago
And the mana effects didn't work either (naturally, this is version 3.1 of the game without mods).
You need to write a handler; otherwise, it's just a hassle.
Added 36 minutes ago
I'll finish it soon and upload it. And you won't have to edit it in the map editor.
Added 2 hours 37 minutes ago
I've re-uploaded the files to the server; now, the archive includes a map handler that unlocks artifacts on the map and activates scripts.
Several changes: The "Sphere of Silent Protection" artifact has been removed, and "Loyal Falcon" has taken its place. The "Sphere of Magical Balance" has been reworked.
The reason for the changes is that debuffs should not appear in passive effects. It is impossible to get rid of a passive debuff without reaching another hero or a market.
In the pictures:

P.S. Sorry for the not-so-good icons and descriptions; everything will be fixed in the release version ;)