Harpies (Battle for Wesnoth)

The harpy faction I made, as an add-on, for the game Battle for Wesnoth. There are 6 unit lines : the rockthrower, the fighter, the night harpy, the traveller, the minstrel and the falconeer. Each of these then has one or up to three evolution paths. There's also 2 additional high level units, the duke of the night and the phoenix.
I included a screenshot to show these units ingame (next to official units and backgrounds), once again the grass background is taken directly from the game.