As much as I like saying Wham Wham, if you say it quickly the game only recognizes it as 1 wham (at least in me and my friends' experience), and often times your not in a situation to slowly say wham wham. I would either change it to two different words, or up the tolerance or whatever for what is counted as a seperate word, although the game already often picks up random words as spells.
#Change wham wham voice command
solar heath
stable idol
for me it picks up when i say uam uam, and it works perfectly every time, but yes when i say wham wham it only says first wham, not everytime though, so could be a voice recognision problem.