Mass Land Denial

Cards that strip every player of lands or shut off land production at once, the effect Commander players call mass land denial (MLD). It splits into two shapes. Mass land destruction levels or exiles all lands in one stroke: Armageddon, Ravages of War, and Catastrophe destroy every land, Jokulhaups and Obliterate take artifacts and creatures with them, Ruination wipes all nonbasics, and Wildfire forces every player to sacrifice lands. Non-destruction land locks freeze land production instead of removing lands: Winter Orb and Static Orb stop players from untapping their lands, Stasis skips untap steps entirely, Back to Basics keeps nonbasics tapped, and Blood Moon effects turn every nonbasic into a Mountain so it can only make red. This is the Bracket-4 gating signal for Commander. It is deliberately narrower than land_destruction, which also fires on single-target answers like Strip Mine, Wasteland, and Stone Rain, none of which belong here. Land ramp and land-fetch such as Cultivate and Rampant Growth put lands onto the battlefield rather than denying them, so they are excluded.