This flat AC calculation doesn't stack with Unarmored Defense; they have to choose a single AC calculation approach or the opposite. They don't offer further damage just after attacks. They only have a 30-foot wander speed, no swim speed. $endgroup$ This really is almost negligible at reduced levels, but as https://dnd-drow24602.blogdon.net/new-step-by-step-map-for-gnome-weapons-43939081