>>11829773 (OP)
You just test stuff until you find out what works best,
I haven’t played this in many, many years but the correct combo was actual a freeze spell (not sure of the name) and then spam the steal blood,
This made you basically invincible.
There was also a sword that you get that stole blood too in the Middle Ages. It is nerfed in the modern era due to guns but it’s still the best weapon.