Neo Destiny Shiny Charizard, Shiny Raichu, Neo Discovery Umbreon, and Neo Genesis Lugia are great examples, as they all cost over $400, even when heavily played
This gives them a supply advantage
Magics solution was the amass mechanic, introduced in War of the Spark and tweaked in The Lord of the Rings: Tales of Middle-earth
1-2 TM Evolution - this is like 1-of on Gardevoir since you need to set up some Kirlias before your next turn, so that you can evolve into ex next turn
ANA Articuno was distributed through Japans ANA Special 99 Campaign
When it's defeated, exile it, then cast it transformed.) When Invasion of Kaldheim enters the battlefield, exile all cards from your hand, then draw that many cards