[Bug/Gameplay] Sovereign's shrinking mana pool
I've played a few different sovereigns so far, and they all seem to lose mana for no apparent reason, ending up with 0 mana for the rest of the game. For example, in my most recent game, the sovereign started out with 14/14 mana, that dropped to 11/11 within 1 or 2 turns, then several turns later it was 5/5, then I stopped playing. I had not cast a single spell. In an earlier, longer-lasting game, the sovereign stayed at 7 maximum mana for much of the game and I was able to cast a few spells, but eventually I was no longer able to cast spells and I found that his maximum mana had dropped to 0, where it remained the rest of the game.