By sheer volume, it's seen most in The Ur-DragonThe Ur-Dragon decks, though by percentage it appears most frequently in Kona, Rescue BeastieKona, Rescue Beastie decks at a 40% clip
But the Wizards-era cards (1999-2003) often called the "WOTC block" or the "Wizard block" remain the most coveted among vintage collectors
All this to say that Magic is not a cheap game
Some of these are replacement effects that double how many tokens would be created under your control, while others take you tokens you already have in play and multiply them
Creator Insight: The Value of Custom Art Christopher Rush proved that art drives value
Each region will still receive the same card, but "the art and language of the card will match the language of the display purchased." This means you can always expect to pick up Gala Greeters, a green 1/1 Elf Druid Creature, but the outfits and locales you find them in will be unique