GoldCyndaquil
Shiny Hunter
That painful split second of waiting and knowing it'll happen.
The developers should've made the HP drop a disappearance. If Black Kyurem used Freeze Shock on Serperior, the amount of HP lost should just disappear instead of drop slowly. It's much more real and unpleasant like how someone says, "That's just how it is". This way it doesn't make you suffer with the agonizing anxiety of watching the HP slowly drop and keep you wondering if the opponent landed a critical hit or not.
But, alas, this isn't what happened in the trailer.
But the speed pf the drop also shows how powerful the attack was. So the HP drop can help you.