The Last Spell Ingredient The trouble with magic is it that it is unexplainable and inexplicable. Diligent research wizards may find cheap and common alternatives
The Enworld community has put together some Dungeons and Dragons 4e prerelease rules. These are compiled from various bits already released by WotC so they are sketchy and may be misleading. However they give a good insight into what 4th Edition will be like.