Master Alchemist is a 10/10 casting class from Magic of Faerun p.34 increases the maximum level of spells you can use in potions; over the course of 10 levels, it allows you to make potions of 9th level spells.
This, by itself, is kinda OK - where it gets
really cool is when you combine it with Quick Potion (SpC 164). Quick Potion lets you "charge" a bottle of water - you then cast any spell you want that can normally be turned into a potion onto the water, giving you a free potion.
If you also have Delay Potion (CM p.41), you can drink that potion and let it "hang" for a number of hours equal to your Constitution modifier. At any point while it's hanging, you can activate it as a Swift action. It has
pathetically easy prerequisites; the party beatstick can pick it up really easily.
So pull out your Eternal Wand of Quick Potion and use it to create a potion of whatever high-level buff you damn well please. Hand it to the beatstick. They essentially get to cast that spell on themselves as a Swift action once.
I think Wish is technically legal.
Whelp.
The Diabolist (BoVD) can make any spell that affects a target or area deal Unholy damage to Good creatures... even if that spell wouldn't normally deal damage.
This lets you apply Fell Drain to
any spell that targets a creature or affects an area.
You normally can stick Fell Drain on spells like Hold Person, Color Spray, or Grease, it just doesn't do anything. Now it does!EDIT: You actually need some way of applying the metamagic spontaneously.
Oh hey, I never noticed that Mortalbane actually applies to
each of your spell-like abilities 5/day. I had always thought you get 5 uses total.
No seriously,
take a look.
