Can I use TCGApp to track the value of Lilo & Stitch #031
Yes, these cards are generally legal in eternal formats like Vintage and Legacy, though they must be played in opaque sleeves to hide the distinctively rounded corners that would otherwise make them marked cards
When in the GY, if they so happen to control a Ritual, Fusion, Synchro, Xyz or Link Monster, it can be Special Summoned back to the field, often brought back to be used as a combo piece
Protect & flaunt your Rayquaza VMAX 218/203 - Sword & Shield - Evolving Skies card in KantoForge's Pokmon Extended Artwork Protective Card Display Case
Broken cards are great in the right environment (who doesnt love Vintage Cube?), but they generally harm formats more than help them