Dragon Lancer is an advance commander in Rise of Kingdoms. The best thing about dragon lancer is his march speed bonus but for PVP and PvE fights is pretty bad. Use him only for gathering runes and do try not to use experience on him.
For talent tree build go with mobility tree but because you will not level him up there is no point of the talent tree.
Pair him as a secondary commander with Cavalry march speed commanders. But you will use this commander only at the start of the game for hunting because you have much better commanders for hunting farmers. But you can always use him to get runes.
Rage Requirement: 1000
Deals direct damage to a single target, then deals additional damage to the target each second for the next 2 seconds.
Direct Damage Factor: 30 / 40 / 50 / 60 / 75
Additional Damage Factor: 30 / 40 / 50 / 60 / 75
Increases march speed of cavalry units.
Cavalry March Speed Bonus: 2% / 4% / 6% / 8% / 10%
Increases attack of cavalry units.
Cavalry Attack Bonus: 1% / 2% / 3% / 4% / 5%
Increases defense of cavalry units.
Cavalry Defense Bonus: 1% / 2% / 3% / 4% / 5%