Secret Lair x Sonic: Turbo Gear reksins seven Magic cards with names and art related to Sonic, but they arent mechanically unique
Its controller gains 4 life
You've also got Regeneration (Boneknitter), graveyard love (Corpse Connoisseur), graveyard hate (Crypt Creeper), life loss (Organ Grinder), tutoring (Corpse Harvester), edicts (Fleshbag Marauder), Necropotence variants (Graveborn Muse), and can even destroy the occasional enchantment (Quagmire Druid)
If you need a card for a Commander deck, you have my blessing to get it whenever you want
If you're opening Collector Boosters, your chances increase significantly, as they contain a minimum of three Mystical Archive cards per pack
The custom background is printed on a thick cardstock and makes a perfect extended artwork display of the card