March of the Machines and Mycosynth Lattice on the battlefield.
Steps
Mycosynth Lattice causes all permanents to become artifacts, and March of the Machines causes all noncreature artifacts to become artifact creatures with power and toughness each equal to their mana value.
This causes all noncreature artifacts with mana value 0 or less, including lands, currently on the battlefield or that are put onto the battlefield to be put into their owner's graveyard as a state-based action due to having 0 toughness.
Results
Destroy all lands.
Destroy all noncreature permanents with a mana value of zero.
Destroy any land that enters the battlefield.
Destroy any noncreature permanent with a mana value of zero that enters the battlefield.