Captain Hook Underhanded has his own map with the Owl symbol
There are some incredibly expensive cards one can potentially find online, but a lot of them are very old cards, maybe playtest versions of existing cards, or mint copies of Black Lotus
The card for Peter Parker himself was considered surprisingly weak
One is the orientation of the inner sleeve and the outer sleeve
His ability is also great for cards and strategies that put a bunch of nontoken creatures into play at once, like Living Death or Eureka
A 6/6 for six mana, Spawning Kraken states that whenever a Kraken, Leviathan, Octopus, or Serpent its owner controls deals combat damage to a player, that player creates a 9/9 blue Kraken creature token