Our slab is perfectly sealed against air, water and dust, and protects the card from the elements
The problem with the original card (I believe it was later changed) was that having two in play was essentially auto-win

Decklist: Modern Living End Living End | Illustration by Greg Staples Creature (29) Shardless Agent x4 Endurance x4 Curator of Mysteries x4 Subtlety x4 Street Wraith x4 Generous Ent x4 Striped Riverwinder x2 Waker of Waves x2 Colossal Skyturtle Sorcery (3) Living End x3 Instant (9) Flare of Denial Force of Negation x4 Sink into Stupor x2 Press the Enemy Commandeer Enchantment (4) Ardent Plea x4 Land (15) Boseiju, Who Endures Breeding Pool Forest Hallowed Fountain Hedge Maze Island Lush Portico Meticulous Archive Mistrise Village Misty Rainforest x4 Otawara, Soaring City Temple Garden Sideboard (15) Teferi, Time Raveler x2 Clarion Conqueror x3 Foundation Breaker Inevitable Betrayal x2 Mystical Dispute x3 Force of Vigor x2 Stony Silence Temporary Lockdown Ive been playing Magic: The Gathering for a long time, and honestly, no cycling deck has ever impressed me as much as Modern Living End

After school, however, I was at a friends place playing Final Fantasy VII, so you can imagine my excitement when Wizards of the Coast and Square Enix joined forces and released a Magic: The Gathering/Final Fantasy crossover
For all these reasons, Studio X realized the need for a change
It helps show off a love for a specific card or character, and great custom ones can go even further than that