TH2 - With no AF3 gloves
TH3 - With AF3+2 Gloves
I got it up to TH5 on one mob out of 2/7 tries. The two that increased message was at a range w/ shadowbind.
I teamed up with a THF doing Colibri NM in Mis, during the course of 2 NMs and several regular mobs I did not receive a single upgrade message, was always "No effect."
I am quite disappointed. Especially since it starts out so low even with AF3+2 gloves and seems to have a difficulty increasing with a THF present. Was hoping at least TH5 base.
Unfortunately, do not have any TH atmas so couldn't test if they stack with BS.