What combinations of spells are the most effective?
Solution 1:
I think you want spells that both stun and hurt the enemies, so:
- Fire, Shock, Blades and Storm do damage
- Vortex, Force Push and Shock (again) seem to stun or push back
I'm not sure, but from experience, one from each category works the best, and after that it's just personal preference.
Solution 2:
Vortex fits with everything, really.
Fireball and Blades give the most damage.
Snow Storm is also a very good spell to combine with Vortex: the combination makes the spell duration four times longer and is very effective for both targeted and area casting.
The best combinations for me are:
Vortex + Snow Storm (Damage + Stun + Very Long Duration/ Large Area + Targeted = 4x Area)
Vortex + Blades (Damage + Stun + Long Duration/ Area = 4x Targeted)
Fireball + Blades (Massive Damage/Targeted)
Fireball + Force Push (Large Damage/Targeted + Area)
Never combine Snow Storm with Shock, Fireball or Force Push though; these combinations suck.
Solution 3:
Fireball + Shock is what I always used. It looks neat and it pretty much destroys anything when fully charged. Use it when you are surrounded by a lot of enemies. Not only does it cause considerable damage, but also stuns them for 4 seconds or so, allowing you the time to safely charge up another finishing blow.