A full art Mars card has been revealed from SM5! The set will release in Japan on December 8th.
[one_fourth][/one_fourth][three_fourth_last]Mars – Trainer
Draw 2 cards. Then, discard a random card from your opponent’s hand.
You may play only 1 Supporter card during your turn (before your attack).[/three_fourth_last]
This of course means a regular Mars card will be in the set. And if Mars is getting a full art, Cyrus should be too.