Of the three cards that MTGSalvation.com Rumor Mill moderator TK-421's secret source spoiled today, the one that has perhaps the most potential relevance for eternal formats is a rare red sorcery that handily gets rid of problem nonbasic lands while also allowing a careful player to use nonbasics along with it and not take a serious hit. Take in From the Ashes:
From the Ashes 3R
Destroy all nonbasic lands. For each land destroyed this way, its controller may search his or her library for a basic land card and put it onto the battlefield. Then each player who searched his or her library this way shuffles it.
At first glance, this often plays worse than Ruination, which was duly reprinted in the original Commander product. But with skilful deckbuilding, this can act as a kind of mana ramp, and it definitely doesn't punish you for playing nonbasic lands yourself nearly as much as Ruination does. Alongside things like Flagstones of Trokair, it can turn tapped-out nonbasics into a nutty late-game land and mana push. It's not necessarily a Legacy powerhouse, but it's just so crazy it might work. Then again, it might be better suited to its multiplayer applications of making everyone at the table with an expensive mana base feel bad about themselves.
What do you think of this land-restoring board sweeper? Let me know in the comments.