Liquid Pain from Book of Vile Darkness

Getting a 7th level or higher wizard or priest to spend 24 hours casting/torturing/extracting a single dose of liquid pain from some poor schmuck for a lousy 200gp is insulting at worst and highly unlikely at best. No matter how much they might enjoy the idea, they could spend their time much more profitably engaged in other, far more lucrative (or diabolical) pursuits.

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