@Keiya: If you look at the original printing (Time Spiral), the flavor text is about some dark swamp monster thing, just like the flavor text on all printings of Corrupt. So the differences are not all that great.

I use it in my Toshiro Umezawa EDH deck. For 8 mana I can often kill two things and gain 16 life. At that point the lifegain becomes relevant. Overall, the best thing about this card is instant speed. Almost all good killspells are instant speed, and cost 3 or less. While this one is a little too expensive, the attached lifegain is often great. Can work in multicolor decks thanks to shocklands.

4/5