There are 15 Autobots and Decepticons represented here, all appearing at Mythic rarity, so theres no reason to expect that Optimus Prime will be harder to get ahold of than say, Slicer (other than fan favoritism, of course)
Instead of being its own 5 card set, these cards were part of the Japanese ADV-P Promotional Cards but reserved the McDonalds set symbol at the bottom left of the card, in Japan only
The types of Artifacts you can stock are pretty standard, with obvious options like Krark-Clan Ironworks and Marionette Master keeping a healthy balance between artifact creation and varied offensive pushes
Redditors on the PokmonCardCollectors subreddit are already celebrating their wins
Each Play Booster includes 14 Magic cards, with 1 to 4 rares or better, 3 to 6 uncommons, 6 to 9 commons, and one land card