From whites perspective, if you put yourself over the group, youve actively defected, whereas from blacks perspective, its the groups job to earn your allegiance and support
How to make custom Magic cards with PrintMTGs MTG Card Maker This is the practical, no-drama flow
Boot Sector Launch X SPELL Field All "Rokket" monsters on the field gain 300 ATK/DEF
This gets some play, mostly in decks that have no access to white or black
Imperial Custom X TRAP Continuous Face-up Continuous Traps cannot be destroyed by battle or card effect, except "Imperial Custom"
Courtesy of Wizards of the Coast and the Tolarian Community College YouTube channel, check out the entirety of the Magic: The Gathering Doctor Who Blast From the Past Commander deck