1 :: pack - you and your pack members( harem members) will have a symbiosis relationship
{where you are the dominant memeber means you got every beneficial traits of your pack members, and they got some of your beneficial traits like bloodline without altering your or their fundamental characteristics}
2 :: devour/absorption - as your real body is a dimension , you can absorb or devour anything which got inside you and got their property permanently
3 :: creation - after combining the innate creation ability of dimension and creation ability from JJK you can create anything you imagine and if you already have material for that you can do that without needing any energy like if you already have metal then you can can create any mechine without needing energy you only have to use energy for making non metalic things on that mechine