Other options may not exactly combo with themselves, but the other combo pieces needed are so generic that it might as well be a 1-card combo
Set Number 19 Language Franais Legal Formats Commander, Legacy, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Modern, Pauper, Pioneer, Standard, Timeless Rulings (9/20/2024) Demonic Covenant's first ability will trigger once for each player you attack with one or more Demons
Alloy Myr A colorless Birds of Paradise is something you might want, but at Manalith casting cost and open to creature removal you can do better than Alloy Myr
TLDR An AI MTG card generator can help with rough ideas, names, mechanics, flavor, and art direction
Cards like Mind Twist, Time Walk, and Demonic Tutor ride a fine line with the metric of taking it pack three regardless of your deck, but they are a good reason to pick up black and blue dual lands and Signets that touch your main colors in the first two packs
The other foil, borderless Traveling Chocobo cards are listed for $1,999.99, while the most expensive non-Chocobo card is a foil, borderless Rhystic Study that's been reprinted for the Final Fantasy crossover as Stay With Me
