Well I was on rated Random Match-up and someone used the Round technique where everyone of there Pokemon has round and uses it. This got me thinking so I tried to replicate it but I don't have Round on any Pokemon (is it a TM if not how can a Pokemon get it?) so I thought about Echoed Voice.
The user attacks the target with an echoing voice. If this move is used every turn, it does greater damage
So I was wondering if two Pokemon on the same team used it would Echoed Voice be powered up?