When a spell or ability an opponent controls causes you to discard this card, create a token that's a copy of target permanent
They might be like Mox Opal and have a 0 in the top right for their mana, or they might be the result of another card that lets you play something for free (e.g
Holy Star decimates their Pokemon-EX provided you discard all of Rayquaza's energy cards
When Kaiba uses the "Shining Nova" effect of "Blue-Eyes Shining Dragon" to destroy "Pyramid of Light", although the effect failed, "Blue-Eyes Shining Dragon" disappears, and later Yami Yugi activates "Monster Reborn" to Special Summon it from the Graveyard
Not overpowered on its own, but not hard to maximize in a green Commander deck either
"One Piece TCG: Official Sleeves Set 5 Standard White With Green and Gold Foil Compass Logo (70)" falls under the category of Game Supplies.