It has synergies with so so many mechanisms and other cards that combined with its near non-existent cost means it is scaling up in value more than almost any other card in the game
Larger shops add gaming tables, pull-tab stations, and memorabilia walls

Abyssal Gorestalker Abyssal Harvester Abzan Devotee Aclazotz, Deepest Betrayal Acolyte of Aclazotz Adorned Crocodile Adventurous Eater Agate-Blade Assassin Agency Coroner Agent Venom Agents of HYDRA Aggressive Negotiations Aggressive Symbiosis Ahriman Al Bhed Salvagers Alchemist's Assistant Alesha's Legacy Alien Symbiosis Alley Assailant Alpharael, Stonechosen Ambush Gigapede Anchovy & Banana Pizza Ancient Vendetta Another Chance Appendage Amalgam Arbiter of Woe Arcane Omens Archenemy's Charm Ardyn, the Usurper Armaggon, Future Shark Arnim Zola, Bio-Fanatic Arnyn, Deathbloom Botanist Ashiok's Reaper Ashiok, Wicked Manipulator Auntie's Sentence Avenger of the Fallen Azula Always Lies Azula, On the Hunt Back for Seconds Back on Track Bake into a Pie Balemurk Leech Bandit's Talent Bane-Marked Leonin Barbed Bloodletter Barbed Servitor Baron Helmut Zemo Baron Strucker, HYDRA Overlord Barrow Naughty Basilica Stalker Beamsaw Prospector Bebop, Warthog Warrior Beetle-Headed Merchants Behold the Sinister Six

This means that if you weigh booster packs, you can usually tell which ones have holo cards in them
Abilities that trigger whenever a creature enters the battlefield don't trigger
Crackle with Power The fail case of Crackle with Power is 5 damage to any target for 5 mana