Eldar vehicles, unlike their infantry counterparts, are very tough and hard to kill because of many evasive and shielding benefits. While no Eldar vehicle has the maximum armour value (14), they often have upgrades and special abilities which can compensate for this and make them more effective than heavier vehicles. Most Eldar vehicles can also be equipped with weapons designed for various purposes. Some examples include the Brightlance (designed for killing Heavy Tanks), the Star Cannon (designed to kill Heavy Infantry), and the Scatter Laser (designed for killing light infantry). This is in addition to other upgrades, such as the Star Engines, Holo-Fields, and Spirit Stones. With the exception of walkers, all Eldar vehicles are skimmers which allow them to move "freely" across the board and, with upgrades, at speeds only matched by the Dark Eldar and the Tau armies. The drawback is that Eldar vehicles are expensive to field in game. An example is the Eldar Wave Serpent, which is one of the most-expensive dedicated transport vehicles in the game.