Hey guys,
I was watching Agents of SHIELD and something Coulson said made me think about the Obelisk. So I paused and came here to write. What if the Obelisk is just a housing unit for an Infinity Stone? The Obelisk is a known alien artifact. It has ties to the Inhumans. And it only lets a free select people touch.
I am not a huge Marvel buff, and don't know how related Infinity Stones and Kree are. I think the Kree were in possession of the stone, got in trouble, and put it into the Obelisk and on Earth. That Kree that saved Coulson and Skye's life is the one who brought it here. Inside the Obelisk is the Infinity Stone, and the Infinity Stone is only able to be pulled out of the Obelisk by someone with Kree blood.
It is just a fun theory. It would be a great way to tie the show into the MCU without forcing it. It would be organic. What do you think of this theory?