Some friends of mine and I are playing with the Monte Cook's World of Darkness. One friend is playing a mage. Most of you can see where this is going already, but for the sake of the GM's sanity I have to ask this. He made the following spell:
Spell: Endless Magic
Area (Self): 0
Range (Self): 1
Duration (day): 12
Heal (recover 9 exhaustion rating): 9
Heal (recover 18d6 components): 36
Metamagic (reduce the previous 18d6 to 18): -10
Total Component Cost: 48
Effect: Caster will recover 18 components and 9 exhaustion rating per round, every round, for the next 24 hours (or until dismissed/dispelled).
Caleb takes 10 on his Spellcraft check, giving him a total of 25, not enough to beat the 48 DC, so he burns 23 components to boost his check enough to make it, spending a total of (23+48) 71 components. Being a 1st level mage, Caleb accrues 48-10-1=37 exhaustion points for casting this spell. Caleb's component pool and exhaustion rating are fully restored within 4 rounds.
RAW this seems to works out fine, but in game it means that in a matter of seconds he is back at full spell casting power and that he can do it all day long. The GM is okay with the mage and knows that this stuff is part and parcel for the course, but it does mean that making a meaningful challenge is difficult at best.
Does anyone have any advice on how to handle this? Making it more balanced, or more costly perhaps? Or should the GM just pull the player off to the side and have him stop using it?
Thanks.