A creature "shares a creature type" with the equipped creature if they have at least one creature type in common
An interesting tidbit about the Pikachu is that the 1996 glossy Ivy Pikachu is actually an error card as Ken Sugimori was mistakenly listed as the illustrator instead of the correct illustrator for these cards, Keiji Kinebuchi. These cards are also extremely challenging to grade the reason being is that they are on glossy card stock and also had to be peeled out from an appendix inside the corocoro comic, making many cards damaged upon peeling
send it to the Graveyard, and if you do, Special Summon 1 "Black Luster Soldier" monster from your hand with a different name from that monster, ignoring its Summoning conditions
4 Destruction Dragon Surpasses Its Pre-Errata Inspiration Legendary Collection Kaiba Mar
Brash Taunter is here for you, too (as is Conspicuous Snoop, to be fair)
Ill let his own words speak for themselves here: Although I bought [a box] in September for $200k, theyre now selling for the price point that I set: between $300k-$400k. This isnt just the case with old sets either, new expansions are suffering the same spike