For instance, Pinkie Pie rewards you with treasure when you play a card with a smile in the artwork, while Applejack lets you use toys as creature tokens, giving you extra abilities if they have wings or horns
That usually means: - Clear card name and rules text - Consistent sizing and thickness (especially when sleeved) - No gotcha presentation (dont make it easy to confuse with an authentic card) If you want the lowest-drama option, use sleeves and keep proxies visually obvious enough that nobody feels weird about it

Julius Jumblemorph Ego Erasure Feisty Spikeling Firdoch Core Fire-Belly Changeling Flock Impostor Formless Genesis Game-Trail Changeling Gangly Stompling Ghostly Changeling Gladewalker Ritualist Graveshifter Guardian Gladewalker Impostor of the Sixth Pride Irregular Cohort Littjara Littjara Glade-Warden Littjara Kinseekers Masked Vandal Maskwood Nexus Mirror Entity Mischievous Sneakling Mistform Ultimus Mistwalker Moonglove Changeling Moritte of the Frost Morophon, the Boundless Mothdust Changeling Mutable Explorer Nameless Inversion Omni-Changeling Omo, Queen of Vesuva Overlord of the Hauntwoods Personify Prideful Feastling Realmwalker Rooftop Percher Runed Stalactite Shapesharer Shields of Velis Vel Sizzling Changeling Skeletal Changeling Springleaf Parade Stalactite Dagger Taurean Mauler Three Tree Mascot Turtleshell Changeling Universal Automaton Unsettled Mariner Valiant Changeling

My theory was that this would cause minor cupping on all of the cards as they would overhydrate slightly
First, its an ability that feels most appropriate in red, a color that has been lagging a little behind the rest of the color pie in the Commander space