I’m under a bunch of work deadlines today and won’t have time for a proper post, but here’s a few quick ideas for mechanics for our hypothetical Magic set, for those who’ve been involved in that.
I’ve pondered a lot of mechanics to fit the military theme. One was some variation on “Supply,” where the creature would generate something when it enters the battlefield. It could make mana, sort of like Priest of Gix, or create token creatures. But that seems bland, like just sticking a bunch of Enters the Battlefield abilities under the umbrella of a keyword. I also considered making “Supply” a drawback, like an upkeep cost, but that isn’t really much fun to keep track of. Alternately, the “Supply” cards could generate something every upkeep. A token soldier, a point of damage, etc. Then they’d get better the longer you could keep them alive. That idea bears some consideration.
I think, however, that I’m leaning toward something straightforward. We could always reuse Flanking (see Benalish Cavalry for an example). It fits the theme very well. Another option would be a variant of Bushido (as seen on Hand of Honor). I don’t have a name for it, but how about:
“CARDNAME gets +1/+0 until end of turn for each attacking Knight you control, and +0/+1 until end of turn for each blocking soldier you control.”
Finally, a soldier-centric variant of Metalcraft. Like, “CARDNAME gets COOL ABILITY as long as you control three or more soldiers.”
Capitol Honor Guard, WW2
Creature — Human Soldier
Warcraft — Capitol Honor guard gains Vigilance as long as you control three or more Soldiers.