Pls state (approximately if u can't tell exactly) how many Crota kills did it take for u to obtain one (or more than one). You have my greatest thanks!
If u have more than one GRobber:
[spoiler]You lucky bastards!!! XD XD XD[/spoiler]
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Get one every single time we kill atheon. Oh actually that's timebreaker. Oh actually that IS graverobber.