{Urborg, Tomb of Yawgmoth} + {Mind Bend} + {Boiling Seas}
Make Tomb say all lands are islands, destroy all islands. Good if you have indestructible lands Or use things like {Dungrove Elder} {Gaea's Liege} {Kalonian Twingrove} making all lands forests. And you know. Not destroying all of them.
Lol that's evil
Or there is {Armageddon} :P
Or just {Devastation} or in this case {Apocolypse} would do roughly the same thing to you
This is Modern legal.
And also can be done earlier than those other cards.