"Perish ye shall," exclaimed Optimus Prime as, since he was in a hurry to punish DarthFerret for skipping "X", he obliterated both lemmings and mice in a fiery laser blast.
Sadly, before Richard Garfield could complete the Regeneration, the ever popular TomB pointed out that the card said "buried" and Garfield vanished in a puff of logic..
Technically, it's destroyed and cannot be regenerated, much like it was originally, before they deemed bury a better solution before scrapping it and returning to Richard Garfield's original wording.
Who scrambled to pick up as many of the Weatherlight characters as they could. Tahngarth is especially a lemming favorite, being the most closely related one.