Talk:Graveyard Units/@comment-184.155.161.15-20200808171805/@comment-47.152.132.208-20200922200151

Harpies are useful from around level 10 to level 30ish, if you're using them for clearing levels quickly. Past that, harpies are rendered obsolete due to the "Infected Bite" and "Infected Corpse" zombie upgrades until you can build the Harpy Outfitter in the late game (Around level 100). Then they can be used to deal with tanks  in boss levels before they pose a threat to your graveyard.