River Trolls have the River Strider and Marsh Strider special rules. Additionally, enemies attempting to attack a River Troll in close combat suffer a -1 penalty on their To Hit rolls due to the stench and slime.
Source: Warhammer Armies Project: Unofficial 9th Edition
River Trolls have the River Strider and Marsh Strider special rules. Additionally, enemies attempting to attack a River Troll in close combat suffer a -1 penalty on their To Hit rolls due to the stench and slime.