18 cards where the card is tagged “external-prop”

Animate Object (Unfinity #33)
Applejack (Secret Lair Drop #1537)
Ashnod's Coupon (Unglued #69)
Boomstacker (Unsanctioned #49)
Fat Ass (Unhinged #95)
Grimlock, Dinobot Leader // Grimlock, Ferocious King (HasCon 2017 #1)
Grimlock, Dinobot Leader // Grimlock, Ferocious King (HasCon 2017 #1)
Handy Dandy Clone Machine (Unstable #149)
Mishra's Toy Workshop (Happy Holidays #14)
Mobile Clone (Unfinity #51)
Nerf War (HasCon 2017 #2)
Photo Op (Unfinity #83)
Pie-Eating Contest (Unfinity #151)
Rarity (Ponies: The Galloping #3)
Shoe Tree (Unhinged #109)
Skull Saucer (Unsanctioned #44)
Tchotchke Elemental (Unfinity #158)
Thopter Pie Network (Happy Holidays #16)
Yule Ooze (Happy Holidays #11)

Though this query has ended, its relics still slumber in New Argive.