The issue is that opponents are locked out during your turn, which makes stack-based strategies nearly unplayable
In this matchup we have access to Grafdigger's Cage in game 1 which is obviously amazing against them
You could definitely have a non-legendary card called 'Tough Turtle' with the same artwork of Raphael
(So thank you, Notch, for making me a cool dad, if only for one night.) When we chose to do this promotion, one of the things we decided was to allow the outside designers a little more latitude when designing their cards
Commanders like Miirym, Sentinel Wyrm and Volo, Guide to Monsters also be good targets for this since they both run blue and make threatening token creatures
Equip only as a sorcery.) Illustrated by Daniel Ljunggren Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Legal Modern Not Legal Brawl Legal Legacy Not Legal Comp