What did it for me?

Strange Tales #179, starring Adam Warlock. Thank you, Jim Starlin.

Read it for free here. The story is fairly well self-contained, so no prior knowledge of Warlock or the MCU is necessary.

Coincidentally, Warlock was left out of the MCU movies despite being the primary player in the Infinity Gauntlet saga in the comic books. I wonder why?

https://readcomiconline.to/Comic/Strange-Tales-1951/Issue-179?id=33295#1