It looks like nature is finally healing!
Koga's Ninja Trick Gym Challenge / gym2-115 Card Sets Card Rule Attach Koga's Ninja Trick to your Active Pokmon with Koga in its name
A rubber ring around these holes will also give a nice smooth feedback when organising and may stop any kind of bending, clipping or scratching for those removing the trays often, but again, this is just a very minor personal opinion, and i can only see a small amount of bending on my trays
so be aware when he has several cards in his little fort with him because they just might be some of the Forbidden One's Limbs
Faciliers Cards, you could turn the game into non-stop bouncing but youd need something to keep the tempo
3D 'shadow-box' alters like this are rarer and usually more expensive than paint overs because they "take multiple copies of a card, on average seven to nine copies": that's going to be particularly pricey for the most expensive Yugioh cards