I think it's final blowup from Rayquaza C level X
Actually, it's not. There are many different attacks that can deal more damage.
Any move that requires the flip of a coin until you hit tails can technically deal infinite damage if you can keep getting heads.
The max, as it seems, is 200.
How to change your username How to add a user avatar Why was my post hidden? The points system Question etiquette Flags vs Downvotes Anime FAQ
Type a Pokemon name, type, move or ability to see instant results.