Tales of Eternia Online features a modified version of the Linear Motion Battle System featured in Tles of Eternia back in 2000 hanged to the Online Linear Motion Battle system. Though X axis movement is controlled by players clicking the enemy they want to fight versus having direct control on that specific movement.
In the tales series Artes are used to dish out extra damage aside from typical character combos. In general these abilities are learned over the course of the game by leveling and in some cases side events. Moves are usually designated to one button and 4 artes can be mapped Linking these moves with your normal combos is the bread and butter of the Tales series in terms of being offensive.