In Magicka there's the lightning storm spell, which requires a lot of set-up in order to keep from destroying yourself, but if used correctly is absolutely devastating. I can accept that end-game spells can destroy your team if not used carefully, but in return I'd want incredible results when I *do* use them carefully. I haven't played around with end game spells yet so I don't how they work, but from my experience fighting enemies it seems like some end game spells (like meteor storm) are safer, more predictable, and do about as much damage. I'll reserve my opinion for when I get some of these spells, but I think the obvious rule of thumb is that spells with higher risk should have higher reward.
