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For a cool name like "Draco Meteor", the animation sure is underwhelming.
I couldn't wait to try it out. It's just a puff of purple smoke. Whoopdeedoo. My favorite attack animation is still Solar Beam.
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There seems to be some glitch with charge move animations where they won't always display if you fire them off too quickly after using your last quick move. The damage still happens, of course, but no animation. If you wait about a second or so between filling the bar and firing off the move though, the animation will display properly.
I have noticed though that when you have a slow quick move (confusion, for example), the charge move animation will always display, even if you fire it off right away.