Check out this amazing set of Marvel cover art for their "What if" series. The illustrations were created by artists Christopher Stevens, and it features several members of the Avengers team battling Ultron. Here's a note from the artist who was obviously very excited to work on this project:
"This was a big one… I guess that's obvious, but I mean for me personally. It's always a big deal to me to be a Marvel cover artist and a pleasure to work on something that's going to be on the front of a Marvel book. I'm a Marvel kid, so it's still a nerdy dream. I feel unworthy, but I mean that in a good way. When I read the description for this I was intimidated and thrilled at the same time. Five connected covers? Avengers? Ultron? A new What If series? Yes, please. Laying out something like this is a bit of a nightmare and I'm still not crazy about the flow here and there, but I'm proud of this one."