When you’re at the damage reduction step, you have a chance to reduce the damage again by the same amount of reduction.
Say you have 80% damage reduction and 25% Double Mitigate:
- in 75% of the cases you reduce your damage by 80%.
- in 25% of the cases you reduce your damage by 1 - 20% * 20% = 96%.
Your average damage reduction thus becomes:
- 1 - (75% * 20% + 25% * 20% * 20%) = 84%.
