Please offer some advice.

I tested the Death, Order, and Nature wards in battle. I did it like this: I placed Angels in two slots, then cast a ward on one of the units. I attacked with creatures from the castle that the ward was effective against (the attacking army had a hero with a Ring of Small Negation). In all cases, the Angels that had the ward on them took less damage. Maybe I'm doing something wrong????:confused: :confused: :confused:

You're surprising me :)
My level 1 hero, without a Ring of Small Negation, and 8 Angels. Against 8 Devils. The Devil has the Life Ward skill, meaning that all magic and creatures related to the Life race deal only 50% of their damage. The Angels attack the Devil and deal approximately 135 to 220 damage, while the Devil deals 230 to 300 damage (approximately). Now, let's give the level 1 hero a Ring of Small Negation. And again, an Angel attacks the Devil, and the maximum damage dealt by the Angel increases by approximately 40, i.e., 135 - 260, although it could be even more. And the Devil's damage remains in the range of 230 - 300.
Now, let's replace the Angel with a Black Dragon, and the Devil with a Titan, and repeat both situations. Thus, the damage of the Black Dragon to the Titan, with the hero-owner of the Black Dragon having a Ring of Small Negation, increases by at least 40.
Third example: - let's leave the Black Dragon, and replace the Titan with a Bone Dragon and a hero. We give the level 1 hero (the owner of the Bone Dragon) knowledge of Life magic, 4th level. First battle without a ring: - The Black Dragon deals "n" damage to the Bone Dragon. We cast the Chaos Ward on the Bone Dragon by the hero. Now, the Black Dragon deals 1/2 the damage to the Bone Dragon. Battle with the Ring of Small Negation on the hero-owner of the Black Dragon: - And again, the Black Dragon deals "n" damage to the Bone Dragon. The hero-owner of the Bone Dragon casts the Chaos Ward on the Bone Dragon. And thanks to the Ring of Small Negation on the hero-owner of the Black Dragon, the Black Dragon deals full damage to the Bone Dragon, i.e., "n" damage.
Conclusion: The Ring of Small Negation increases the damage dealt by the hero's army to creatures with a ward (whether it's a skill or a spell) by at least 40.