NHF – new heroes for Heroes V 3.1.

It should reduce the largest stat of the enemy by half, not a specific stat. It's much easier to calculate that way. With percentages, you still have to calculate and understand the extent of the reduction.

I'm shocked. A normal special ability should be limited to 2-3 stats. A specific one (only against a hero) can go up to 4-5 units. But reducing the largest stat by half(!) is clearly an overdoing. Furthermore, this won't work against heroes with the highest knowledge unless you also reduce their mana to the limit.