yugioh dragon card sleeves Yu-Gi-Oh! 120 micrometer quality thickness Yu-Gi-Oh! Duelist Card Protector Red-Eyes

Creatures don't even need to actually deal combat damage for Hopper's ability to trigger, they just need to have been declared as attackers letting you Maze of Ith or Labyrinth of Skophos a creature to get them out of harm's way but still get that clue

Pillar Analysis: High Power (Dual Land), Scarcity (Beta, Reserved List), Collector Scarcity

Character Cinderella Knight in Training (Confirmed steel card, fits)

Most of the time, it's worth giving your opponent a card for a copy of an instant, sorcery, or Otter -- that's because you get the copy for free and it's likely to be better than a random card from their deck

Jim Hawkins, Honorable Pirate Being able to filter the top four cards of your deck just by playing Jim Hawkins is fantastic