Wizard – “Hope of Zephyr” [Campaign 6, Mission 5]

and without 5k skeletons =)

This was a feature of only one campaign map - all heroes are level 30 with all maximum abilities - and moreover, the neutrals have a number from 1000 and so on. It's pointless to gather so many skeletons, so you have to complete it quickly.
But... the conversation is already going beyond the scope of this topic, sorry for the off-topic.