classes = input("There are three types of classes in this game. Warrior, Wizard and Hunter. Pick one.")
if classes == "Warrior" or "Wizard" or "Hunter":
print ("Good choice.. the "+classes+" will dominate your opponents!")
else:
print ("That's not a class! Pick again!")
#Basically, I want to add a loop so it'll ask the question again.
Keep in mind I am using Python-3