Last Perfect Cocktail Was a Super-Serum: When turning the dial, if this click is revealed due to damage taken from an opponent's attack, stop turning the dial.

If Lex Luthor is damaged by Pulse Wave and reveals this power, do I stop turning the dial?
No. Pulse Wave ignores all game effects possessed by the character(s) in its range until actions have resolved. So when this power is revealed, it is currently being ignored and will have no effect. And if the Pulse Wave would deal enough damage to click past this click, then you do indeed just keep clicking.