system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Why is the Super Hero alluded to in the post credits of Avengers Infinity considered so powerful to be considered as a last resort? [Spoilers]

What powers does she posses that would pose a threat to Thanos that other super heroes don't have?
gpt
We don't know yet why Captain Marvel hasn't been called before or if it even has anything to do with her powers.

Captain Marvel is very powerful though. She has super strength, super-sonic flight, precognition, can fire powerful energy blasts, and can absorb energy to increase her own strength. 

In the comics, Carol Danvers most powerful form was as Binary. She could tap into the energies of stars and thus could control heat, gravity, and electromagnetic energies. 

We have yet to see what Captain Marvel's powerset will be in the MCU.