Combat Arts +3 effect and which characters, classes and mounts have it.
Unit can equip +3 combat arts.
Swordmaster, Battlemaster, War Monk, Bow Adept, Shadow Seeker, Sentinel, Castle Knight, Orichaldia, The Blade, The Apsara, The Eternal, The Godhand, The Calamity, The Trident, The Cavalier