my combo against covie, almost impoosiable for them to stop without pure banshee's but since I play anders cryo stops that, and leaders get owned by flamers along with any hunters against my wolves and if they make beam rifle they still fail as they would need a whole army and I would dipatch it with a simple press of the Y-button.
only way to stop it is wraiths and wraiths are countered by gremlins and spartans and wolves arent half bad against them and they take forever to kill anything unless there army is full pop scorch then you might want to worry.
anyway best combo agaisnt covie by far (1v1 atleast)
GT: EverCuteKitty
1v1-front page (random all)
2v2-front page (anders)
3v3-top 50 (random UNSC)