Cursed Fog-bank

As an additional cost to this land, sacrifice the
top 2 cards of your library.
The abilities of this land have flash.
{t}Prevent all damage that would be dealt by
target attacking creature with power 2 or more.
{t}{5}Sacrifice Cursed Fog-bank. Prevent all
damage that would be dealt by all attacking
creatures this turn. Sacrifice a creature.
At your next end step, return Cursed Fog-bank
to your battlefield tapped.