What’s going on in this set photo featuring the Hulk, Iron Man and Wong from ‘Avengers: Infinity War’?

Even though Marvel Studios released the official trailer for Avengers: Infinity War five days ago, we still can’t get enough when it comes to leaked information on the upcoming summer blockbuster pitting Iron Man, Captain America, Hulk and the rest of the MCU against the power-hungry Thanos.

So when Atlanta Filming tweeted this on-set photo earlier this morning, we took notice:

The photo features Bruce Banner/The Hulk (Mark Ruffalo), Iron Man (Robert Downey Jr.) in a crouching position and Wong (Benedict Wong), Master of the Mystic Arts of Kamar-Taj, who looks to be conjuring some sort of spell as a result of a giant grey fist heading for Banner’s throat. Could the grey fist be an early, pre-production fill-in for Thanos? Or have Dr. Strange and Wong figured out a way to separate Banner and the Hulk’s physical forms from one another as a means to deter the Mad Titan?

What is going on in this photo? Sound off in the comments.