Sorcery, 4R (5) Choose a land type. Remove from play all lands of that type that you control. Drop those cards, one at a time, onto the playing area from a height of at least one foot. Destroy each card in play that is completely covered by those cards. Then return to play, tapped, all lands dropped in this way.
Illus. Daren Bader
You can choose a land type which you control zero of. [DeLaney 1998/08/12]
You won't know what cards will be destroyed until this spell resolves, so it can be tricky to play regeneration spells and abilities in the right places. You have to guess what might be destroyed. [D'Angelo 2000/03/09]
Once announced, players may not rearrange their cards until after the resolution is complete. [DeLaney 1998/08/12]
Will not destroy token creatures. [DeLaney 1998/08/12]
Cards which are under another card, which is in turn completely covered, are also completely covered. [DeLaney 1998/08/12]
If a card is only partly visible because it is partly under another card, covering the visible portion is enough to destroy it. [QAS 1998/09/09]
Counters on a card cannot stop a card from being covered. [DeLaney 1998/08/12]
All tournament formats have banned cards from Unglued.
Unglued
(Rare)