In Sub-Zero’s Dead of Winter variation, he can Amplify Ice Ball, or , to combo off of his overhead +. Amplifying costs 1 bar of Offensive Meter, so it can be a waste if the + is blocked. To conserve your Offensive Meter, you must hit confirm the Amplified Ice Ball and only Amplify it if the + hits.
The reason this works is because Amplified Ice Ball requires 2 inputs: [NOTATION]AN[NOTATION]AMP. This allows enough time to hit confirm the Amplified part so that Ice Ball will only be Amplified if the + hits. If the + is blocked, then the Ice Ball is punishable anyways so there is no reason to Amplify it.
This technique is very difficult and if not done correctly, you risk giving up a combo off of Sub-Zero’s +. This should only be used if you can react quick enough and hit confirm 100% of the time.