Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
after seeing some sets i think pokemon get moves of pokemon there megaing into
Zapdos --> mega pidgeot
zap cannon
hurricane
heat wave
roost
bad accaucy moves turn amazing when no guard appears, seriously, zap cannon+hurricane