Yellow card-$$$man caution for trolling
The most pertinent issue I have with this is the card concept--things that are already flying hardly get affected by landslides. I understand that you're trying to better integrate the airborne concept into the game but it's still insufficient justification for me
Otherwise, at 7
, for its effects, it is decently balanced. Maybe it would make more sense if it doesn't deal double damage to airborne creatures, but instead puts them in a time bubble? The cost just about puts quicksand/landslide decks at a feasible but difficult to execute combination. Good luck on refining the idea further, decent work so far