1. Check the Conservatories (both 2-4 without GS), take the smaller one without entering the contact zone.
2. Have Maryka retake the Wristbands and attack Dessa with the Wristbands using a scout hero with the army that's currently available.
3. Force the Conservatory without checking with Maryka, have her retake the Wristbands, and then attack Dessa with a scout hero carrying Might and the Wristbands.
I absolutely didn't want to let Dessa roam the map, so I discarded the first option immediately. Attacking Dessa with a scout hero using growth without a spell book, when he had just doubled his mana, and not knowing his skills and stats (only one castle present), while the fight would be on Barbarian home turf... that wasn't great. I decided to consult Amilus's coin again; she said — take the Conservatory. The max Conservatory was against taking it. Thanks for the game.