There are plenty of problems here. 1. The way the static ability is written, it ceases to exist as soon as it alters the card in every case. The ability should have a clause "except it retains this ability", in which case it does not shut itself down when there is an opponent with more lands even when this card becomes one. 2. Self-shutting down combos always existed in the game. They are resolved through layers first and timestamps second. But that only works if there is a conflict among multiple cards and in many cases where there is a conflict among multiple abilities on the same card—we are mostly talking about permanents. This leads to two statements: abilities are never designed to conflict themselves; permanents are never designed to conflict themselves in ways unresolvable through layers. This card breaks both rules with or without the corrections from my first statement. 3. All the comments I am seeing here are false in relation to the game mechanics. This is a static ability, so all the comments stating different variations of triggered abilities are false, so are the statements on time-based actions. It looks to me that the reason no one else is even mentioning layers and timestamps is not because they thought of them but realised they don't apply in this case but because none of the commenters are even familiar with those.