[Help] i need a bit help whith something [help]

[dragon ki228]

How to make a npc in the castlewars area and if some1 frome the sara team kills it it doesn't mather who the game times resets and the whole sara team get teleported out of the cw area back in the lobby and the game is over and the whole sara team gets a item of the npc it doesn't mather who killed it onley if its frome the sara team pls can some1 help me whith this? its for an mini game and ill release it when its done.

its for a 317 server.