Your resistances are far too low. At this stage of the game you should have at least 40 points each...
Concerning deadly gift: You need scorpion traps, which you can find on random locations (also enemy drop) or you buy them (for example from Tingalf).
When you have the traps, equip the skill and then click on the scorpion traps.
rightclick and see the enemies fall.
Warning: The scorpions are extremely overpowered and the best weapon in the game. If you use them often the game might become too easy for you.
