, an Elf: Regenerate Rhys the Exiled.
Rhys the Exiled
There's something cool about how the daytime (Lorwyn) version of Rhys is also the non-good (or at least somewhat antagonistic) version. He obviously does spectacular things in just about any elf-themed deck, though there will be some opponents who don't care how much life you gain and the combat requirement makes him more vulnerable than something like Wellwisher. My favorite use of this card, though, is as the commander of a Lorwyn elf-themed EDH deck, and it's there that he shows off what that distant, sunlit world's elves are about (better than Nath, in my personal opinion).
(Black), Sacrifice an Elf: Regenerate Rhys the Exiled.
Rhys the Exiled
Exiled is, quite frankly, not as good as his honorable counterpart. The life gain effect will probably net you a good 4-5 life a swing, and regeneration's always a welcome, but there's just better picks. As an EDH commander, a sac engine revolving around Exiled is an idea, but not exactly a good one.
Today's card of the day is Rhys the Exiled which is a three mana Green
3/2 Legendary that when it attacks has you gain one life for every elf you control and for one Black mana and sacrifice of an elf you can Regenerate Rhys. As an elf warrior this has quite a bit of support and in an elf theme this can add impressive life gain with no drawback, much like Lifelink. The regeneration ability is a nice bonus in a Green/Black build that can help protect Rhys if boosted with +1/+1 counters or other cards. Overall a decent midrange creature in elf tribal with a situational protection and sizable life gain potential.