And if you roll a 10 or higher, you get to double dip on the blink aspect, resulting in some potentially terrifying value swings
The inevitability of getting high power creatures and potent enter the battlefield effects like Sun Titan, Kokusho, the Evening Star, or Ashen Rider during every one of your turns for 0 mana is backbreaking over time, especially as it means nothing short of an exile effect will permanently keep a threat off the table
TCGPlayer in the US or Cardmarket in the EU tend to be very popular choices, and eBay is a decent option in whichever region you're in, especially for graded cards
He has current relevance, but he does not yet have the long competitive history of Black/Yellow Luffy, Enel, Katakuri, or even Blue/Yellow Nami
Sorting by rarity is a middle ground between the two and is especially helpful when building a trade binder