How long did it took for you to get the Tusks of Mannaroth?

I made no serious attempts to get the Tusks, but I got them anyway.

Is there any way to track how many times you’ve killed mythic garrosh? When I look at statistics it only shows normal/heroic kills.

Honestly…because I only want the mog on a maghar warrior I hardly ever play…I gave up after about 10 runs