Odyssey?

Perhaps this is a stupid question, but I haven't been able to find it anywhere, so I decided to inquire about it here. I know that as far as milestone rewards go in the odyssey (like the 2015 border), they will be exclusive to the odyssey only. Will everything else be exclusive to the odyssey too, though? Like the god skins?

No, the god skins will last past Odyssey, unless they mention otherwise.

For example, you will still be able to buy Antimatter He Bo after the Odyssey ends.

"Players can also complete Collections by obtaining all items from each item set which will earn them exclusive Odyssey rewards that will only be available in this event. Additionally, every item purchase will also grant a free treasure chest.

These are the items that have been and will be added over the course of the next few months, each one comes with a small bit of lore. These items will only be accessible though this event and may be removed from the store once the tournament is over."

And below are all the things that have been released through odyssey. So they could be exclusive they haven't announced it or anything. But collection sets will be odyssey exclusive only; border(6 items), e sport vp's(9 items), limited agni skin( 12 items (not out yet))