alt-upgrade for the Prophets – a sideboard against the same units, but when playing through Chaos, with the ability to focus on the desired stack, which the Prophets lack. (although, judging by the description, there is a vague suspicion that the alt-upgrade for tier 5 is described, and not tier 6).
Added after 19 hours and 24 minutes
Suddenly, a second Shadia appeared in the hero selection menu, Sinistar has an icon of Agrael, and Sorgalla has an icon of Trals.
Added after 2 minutes
Ah, I understand, I had a mod installed that adds companion heroes, which is why the second Shadia appeared.
