Tectonic Edge’s second ability checks how many lands an opponent controls only at the time you activate the ability.
01-03-2010
wotc
Assuming you can activate Tectonic Edge’s second ability, you can target any nonbasic land with it (not just one controlled by an opponent that controls four or more lands).
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.