Oh, there might just be a way to implement this...
I had so many problems with damage sharing causing a ship inexplicitly explode!
When a ship is hit, it will incur a damage-sharing event for one second, which will pile on the damage in a seemingly random way... ...this might be enough...
If not, you can use an antimatter pool as an extra Jackpot Attack, from your Ability Source, allowing more random damage dealing...
You could also make it deplete antimatter reserves, as if the attack struck the Antimatter tanks