The Alkulu Warp

Choose target land. You may search your library
for another card with the same name as that land
and put it onto the battlefield. If you do,
creatures you control get +X/+X and gain until
end of turn, where X is the number of lands on
the battlefield. You lose the game at the
beginning of your end step.
The Alkulu Warp is the most powerful thing in all of
the multiverse. It can bring worthy planes in,
but can destroy other unworthy planes.