Djinn hunt

I have been on a small Green Djinn hunt. I wanted to find some small oil lamps but I didn't found any. I killed 3 djinns with 1 uh each, and I wasted 4 uhs on the 4th djinn. I also went to look upstairs. I expected a green djinn and 2 gargoyles there, but I found 2 green djinns and 3 gargoyles. I didn't killed them (maybe I'll when I can use explosions).