This new "gamemode" is called the dragon slayer. Once the map starts both teams receives dragons which flies around the spawn. It has an independent sentrygun inside his sasha-body. The first team to slay the opposing team dragon wins. To kill the dragon you need to hurt his head. It's the only vulnerable part of his body. You can jump on your dragon to fly with him and protect him. The dragon has a lot of health points so it won't be so easy to kill him(1 uber won't be probably enough). You can't hurt your dragon, only the opposing team can. Here is the dragon model i made from backburner sasha and completely new parts made by myself :
This gamemode is now complete and 100% working, right now i'm making a map for it. Shortly after this map release i'll also release dragon prefabs. Stay tuned
EDIT: And here is screenshot of the WIP map for dragon slayer gamemode. This map has only one dragon. the red team is defending him and blue is attacking. I'll also make a desert styled map with two dragons.
This map is called ds_mysticruins ;)
This is ds_extractum, the second map with two dragons and desert art style, thanks to Fearlezz for this one.