Only Tyranitar? This is the 6th most commonly move in the metagame we're talking about here. In OU alone, I've seen Stone Edges coming off Aerodactyl, Breloom (admittedly never going to try its luck), Dugtrio, Gyarados, Heracross, Lucario, Machamp (also not so good without Scarf), Mamoswine and...