Damage Bonus sphere

Someone brought up a good question: if more than one damage bonus sphere is running, do they stack? Which leads to another question, how does that interact with triple damage?

They shouldn't stack.
However, you can have an invulnerability, a damage and a healing sphere all working together.

I can't remember what happens with the triple. I think they are mutually exclusive, as the damage sphere uses the udamage flag, which is also used by the triple. I will have to test.