Treemen have the Forest Strider, Magical Attacks and Immunity (Psychology) special rules. In addition, they have a Ward Save (5+) which becomes a Ward Save (6+) against Magical Attacks. They cannot be joined by any characters.
Source: Warhammer Armies Project: Unofficial 9th Edition (v2.2)
Treemen have the Forest Strider, Magical Attacks and Immunity (Psychology) special rules. In addition, they have a Ward Save (5+) which becomes a Ward Save (6+) against Magical Attacks. They cannot be joined by any characters.