system
Given the following post, respond as if you're commenting on Reddit:
human
[Doctor Strange / Infinity War / MCU] What’s the difference between Doctor Strange’s shields?

Throughout the movies, we see him always casting shields to be used on his hands and there always seems to be a new way of casting them.  However, they always yield the same orange-sparkly shield.

What’s the difference between the casting types and shields (other, of course, dramatic effect)?
gpt
They may look to same to your mundane eyes, but each one is fine tuned to be the best for the situation as Strange sees it. Better resistances and affinities to certain energy signatures for example.