Only 1-4 Diamonds , 1-2 Star , and 1-2 Shiny cards can be traded, meaning a 4 Diamond ex Pokemon card can only be traded to another ex Pokemon card with the same rarity
Thousand-Year Storm rewards you for casting a bunch of spells in one turn by copying them several times for extra value
You could certainly place a rounded rectangle filled white and stroked in black onto a scan of the image file, drop text on top of that, save a copy as a bitmap, and use that in the GFUI for an engrave
Inspect Before Buying: Request high-resolution images or examine the card in person before completing the transaction
Time Spiral itself features reprints from the past with a sneaky pun on a black card in Dread Return, and Planar Chaos took popular cards and shifted them into different colors like Serra Sphinx, which is just a blue Serra Angel