"Light Confidant"
Creature - Human Wizard

At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You gain life equal to its converted mana cost.
1/2
Sure, on the surface this looks like terrible and lazy design - after all, it's a boring inversion of a great and interesting card. However, its impact on deck design is pretty interesting. Dark Confidant really rewards careful design and a tight curve. "Light Confidant" encourages the opposite - it would be great in some terrible deck with lots of Craw Wurms. It's a really powerful effect but comes down pretty late, so I think it's safe for the most part.
It may not be correctly costed or even in the right colors. But white and green are the colors of life gain, as well as black's enemies. Also, green got Harmonize in TSP block, so the card draw aspect isn't totally out of the question.