Rollback between castles during auctions.

I looked at the stats, laughed, especially enjoyed the Fortress vs. Necropolis pairing in the HotA)))

Glad you're having fun :)
But seriously, the HotA has a weaker starting lineup, and I really get lost when deciding who to trade with...
And still, it seems to me that Fortress is a bigger problem in the HotA than Necropolis...