Let's be honest for one second.
The inability to charge skills trough other skills didn't nerfed down the Aztects , it made them ULTIMATE SUPERIOR to others. Shit, they are superior in every way due to all those transforming abilities (i won't mention the ultimate ability - Power of the Ancients). Every other girl set is useless, You can't beat the dmg output the aztecs girl do (literrally every second turn they can achieve 75+ % maximum dmg output). You must have full set of ultimate girls on high lvl to beat such combination, a combination of non advanced cards , they are supreme from lvl 1. More ... if you don't have Peai on your Aztec set, you'll loose.
on 100 batlles - Aztecs win 99. WTF ?