The trailer for Avengers: Doomsday is out now

Something's coming. I've fought with many warriors in my time. They were far stronger than all of us put together. And they died. They died facing enemies and threats. That scared me far less than this one. Everything that they sacrificed would be for nothing. If we do not stand together, put aside your petty squabbles, and presume nothing except this. If you return, you will return as brothers and sisters. My words are going to need a marathon to blossom.