This is allowed on Blizzard Servers so it is not bannable
Basicly you go up to the trainer and just use this macro
Code:
/run LoadAddOn"Blizzard_TrainerUI" f=ClassTrainerTrainButton f.e = 0 if f:GetScript"OnUpdate" then f:SetScript("OnUpdate", nil)else f:SetScript("OnUpdate", function(f,e) f.e=f.e+e if f.e>.01 then f.e=0 f:Click() end end)end