Marvel is offering a 'God Wheel' to comic book retailers as a tie-in to the upcoming War of the Realms event as part of a larger midnight release program for midnight on April 3. The publisher didn't specify what the God Wheel is, or show off any images of the product.
In Norse mythology, there is a circular symbol called 'Odin's Cross,' which is often used as an emblem for followers of that religion. It is a form of a solar cross - with a cross inside of a circle. In Hebrew mythology, there are wheels surrounding God's throne with cherubin riding on them as guards.
Marvel is selling God Wheel 25-packs for $10 each to retailers, and giving away a free 25-pack to retailers who order 300% or more of War of the Realms #1 compared to their orders of Avengers #11.
The publisher has plans for other unspecified "exclusive party offerings" for the April 3 midnight release, including variant covers by Amanda Conner and others, along with other promotional items.