ok, jad is pretty easy if you know how to do it right, you 1st need about 5 prayer pots and about 20 food (just incase u do it wrong) but prayer pots are essential
to defeat jad, the most efficient way is to use mage, because you can farcast and the monsters cannot hit you most of the time
i suggest at least 80 or above mage, or else it is just a pain, also a lot of runes, i took with me 10k of each rune for ice barrage and i came out with like 1.5k left of each rune
first i am going to show you the 63 waves that you must complete
Wave 1: 1x22
Wave 2: 2x22
Wave 3: 1x45
Wave 4: 1x45 1x22
Wave 5: 1x45 2x22
Wave 6: 2x45
Wave 7: 1x90
Wave 8: 1x90 1x22
Wave 9: 1x90 2x22
Wave 10: 1x90 1x45
Wave 11: 1x90 1x45 1x22
Wave 12: 1x90 1x45 2x22
Wave 13: 1x90 2x45
Wave 14: 2x90
Wave 15: 1x180
Wave 16: 1x180 1x22
Wave 17: 1x180 2x22
Wave 18: 1x180 1x45
Wave 19: 1x180 1x45 1x22
Wave 20: 1x180 1x45 2x22
Wave 21: 1x180 2x45
Wave 22: 1x180 1x90
Wave 23: 1x180 1x90 1x22
Wave 24: 1x180 1x90 2x22
Wave 25: 1x180 1x90 1x45
Wave 26: 1x180 1x90 1x45 1x22
Wave 27: 1x180 1x90 1x45 2x22
Wave 28: 1x180 1x90 2x45
Wave 29: 1x180 2x90
Wave 30: 2x180
Wave 31: 1x360
Wave 32: 1x360 1x22
Wave 33: 1x360 2x22
Wave 34: 1x360 1x45
Wave 35: 1x360 1x45 1x22
Wave 36: 1x360 1x45 2x22
Wave 37: 1x360 2x45
Wave 38: 1x360 1x90
Wave 39: 1x360 1x90 1x22
Wave 40: 1x360 1x90 2x22
Wave 41: 1x360 1x90 1x45
Wave 42: 1x360 1x90 1x45 1x22
Wave 43: 1x360 1x90 1x45 2x22
Wave 44: 1x360 1x90 2x45
Wave 45: 1x360 2x90
Wave 46: 1x360 1x180
Wave 47: 1x360 1x180 1x22
Wave 48: 1x360 1x180 2x22
Wave 49: 1x360 1x180 1x45
Wave 50: 1x360 1x180 1x45 1x22
Wave 51: 1x360 1x180 1x45 2x22
Wave 52: 1x360 1x180 2x45
Wave 53: 1x360 1x180 1x90
Wave 54: 1x360 1x180 1x90 1x22
Wave 55: 1x360 1x180 1x90 2x22
Wave 56: 1x360 1x180 1x90 1x45
Wave 57: 1x360 1x180 1x90 1x45 1x22
Wave 58: 1x360 1x180 1x90 1x45 2x22
Wave 59: 1x360 1x180 1x90 2x45
Wave 60: 1x360 1x180 2x90
Wave 61: 1x360 2x180
Wave 62: 2x360
Wave 63: 1x702 (on this level, during jad's mid health, some healers will show up, but u do not worry)
there are a somewat safe spot for jad
that is when you go directly west from entrance, you will see like a hump
if you are on the side of the hump that is farest from the entrance, then you will see a pool of lava, just stay there the whole entire time, and you will be mostly safe