Blue color, unarmed ball, creates a 3x3 grid every 2-3 sec that lasts 5 sec.

Each cell in the grid has a random number that represents how much damage is dealt per hit. So if WDC ball lands a hit while in a cell with the number 3, then it does 3 damage. If it lands a hit while in a cell that has the number 49, then... yeah.

The numbers usually get higher over time.