http://destiny.wikia.com/wiki/Crux_of_Crota
You need to have the eidolon equipped while killing crota?
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[quote]http://destiny.wikia.com/wiki/Crux_of_Crota You need to have the eidolon equipped while killing crota?[/quote]Nope I just got it from killing Crota..... Didn't need anything special