mist valley shaman yugioh japanese card / Secret - HA01-EN005 you can return 1 monster you control except this card to your hand to have this card gain 500 ATK until the End Phase. Yu-Gi-Oh! Wiki - Mist Valley

The bonus is nice too

Currently available at a discounted price during Walmarts early Black Friday deals, its a great chance to grab this premium set at a bargain

Release Date: 1999 Grading: CGC NM/MINT 8 Pokemon card value at auction: $113,880 When Wizards of the Coast launched the Pokemon TCG in 1999, they reworked names, card designs, and even swapped Japans Cosmos holofoil for the English Starlight. But before deciding, they tested and printed several foil patterns and stocks

If you're not as keen on Gengar, then Phantom Forces also has two Mega Manectric cards to collect, though Gengar is probably the reason you'd buy this set