Posts from Skill: ARMOR Auto-translated

The manual states that the armor skill does the following: "This creature is immune to all spells and effects that reduce 'Defense'." So, besides resistance to the damaging ray, will "Lizard Rush," "Empowered Arrow," and "Fire Lord" not affect a unit with this skill?

They will be immune to these abilities. In general, they are immune to all abilities that reduce or ignore defense.

Let me clarify slightly. The "Empowered Arrow" ability of the alternate archers of Sylvan does indeed work. Most likely, the reason is that it's an "alternate" skill, and it was implemented in a hurry. Not all bugs were even fixed in patch 3.1.

You can test this in a duel between Ossir and Ibby; the damage will be almost the same against the black bears (slightly less, as they have 2 more native defense).