An Imgur user made a gif with footage of Erik Selvig (Stellan Skarsgard) from Thor: The Dark World explaining the Infinity War teaser.
Avengers: Infinity Warwill have the biggest superhero roster the Marvel Cinematic Universe has had so far, so it could be confusing and difficult for some to follow the lead – luckily, there’s Erik Selvig to explain it all.
The original scene has Selvig explaining the realms to fellow patients in an institution (including Stan Lee) – a few subtitles here and there and it’s the perfect scenario for an Infinity War explanation.
The creator of this fun Selvig gif managed to synthesize a bunch of details without losing the point or making it confusing.