The reason why I believe Gym Challenge has the slight edge is because of Blaines Arcanine #1 and Blaines Charizard #2
When "Shadow Vampire" is summoned, use its effect to recruit "Vampire Scourge," then use its special summon effect to pay 1000 LP and special summon "Vampire Familiar" from the graveyard
When gold cards were first introduced, not only were many of them not particularly strong, but they had a unique restriction all their own, because these cards weren't just special
[1] If you control "Junk Warrior", "Assault Mode Activate" or a card that mentions those cards: You can Special Summon this card from your hand
Many survivors believe that if they can find it and destroy it, that will be the end of him, a rumor that the Lord of Pain actively encourages because it means more survivors will willingly enter the razor mazeswhere hordes of razorkin eagerly lie in wait