NHF – new heroes for Heroes V 3.1.

I have an idea for hero specializations. It's actually used in the original game.

Let's take a hero like Iris.
The essence of her specialization: in battle, regular (unupgraded) griffins are replaced with identical ones, but with the "Dive Attack" ability (because other heroes' regular griffins can't dive attack).

Here's the process:
1. We use NCF.
2. We create copies of some creatures with additional properties.
3. When a hero specializing in a particular creature starts a battle, we replace them in their army with the created copies.
4. When the battle ends, we switch them back.

PROFIT.

This way, we can significantly strengthen not-so-strong creature-focused heroes.