From our own Master List....
Knight of the Holy Nimbus

{W}{W}
Creature -- Knight
2/2
First Strike
If Knight of the Holy Nimbus would be destroyed, regenerate it.

: Knight of the Holy Nimbus can't be regenerated this turn. Only any opponent may play this ability.
The new set most assuredly contains a card virtually identical to this. They dropped the colorless, gave it Flanking instead of first strike, and made it part of the Rebel chain, but even the name is identical.
Sorry if this has been discussed already, and I know that we have the standard disclaimer on this page about how WotC can borrow from this list as much as they desire, but I didn't see any talk about this and tought that whoever designed this card deserves some manner of cookie.