yugioh shaddoll card sleeves Shadows over Valhalla Secret Rare Fusion SHVA-EN057 If your opponent controls a monster(s) that was Special Summoned from the Extra Deck Card sleeve - Yugipedia

A bit easier to find although still very rare is the 2002 card released in Legend of Blue Eyes White Dragon set

This contrast is the point

GR Gold Rare Number 101: Silent Honor ARK X WATER Rank 4 [ AquaXyzEffect ] ATK 2100 DEF 1000 2 Level 4 monsters You can detach 2 materials from this card, then target 1 Special Summoned monster your opponent controls in face-up Attack Position

With a Collector Booster included, it might just be one of the easier ways to get hold of one of the pricey packs with a discount from Amazon

"Their price hierarchy echoes their release: 1st Edition being first, shadowless being second and unlimited being third," explained Pratte