Instead of providing new card designs to players, Core Sets provided reprints to bolster the core experience of this Magic Format
Standard
The only card ever banned for the Cedh metagame was this blue instant
Flash
The mana ability of this card can create a popular rules issue with Panglacial Wurm
Selvala, Explorer Returned
A temporary 6/1 with haste and a all-star removal option
Ball Lightning Bolt
This red finisher was once printed with {Y} in it's casting cost
Fireball
Core Set 2021
This banned card was also responsible for the banning of Painter's servant
Iona, Shield of Emeria
This card is Ashnod's Altar but for artifacts
Krark Clan Ironworks
A very sad robot and a card that makes more robots (constructs to be precise)
Solemn Simulacrum Synthesizer
This shy creature is one of two white Wurms
Saltskitter
Ending in 2020, Core Sets started in this year with Alpha edition
1993
This card is the only one banned in commander before it's release date
Lutri, the Spellchaser
Activating a mana ability to reset priority in Cedh is known by this derogatory term
Mana Bullying
A strong mono-white creature that provides for both tokens and humans, and another white card that can sacrifice itself to destroy an artifact or enchantment
Adeline, Resplendant Cathar Commando
This seven mana black sorcery can win the game instantly with the help of Syr Konrad, the Grim
Morality Shift
Printed in 2015 and guest designed by now disgraced game developer Markus Persson is this card
Aggressive Mining
This card is the only Legendary Creature banned in both Commander AND Legacy
Nadu, Winged Wisdom
This one mana artifact allowed four-color decks to play Blood Moon in Modern before its ban
Arcum's Astrolabe
A man-land that adds white mana and a slightly powercrept Verdant Force in RG
Cave of the Frost Dragon Broodmother
Printed in Planar Chaos, this counterspell is functionally unique in it's color
Mana Tithe
At a whopping $45 usd, this Angel is the most expensive card from Core Set 2014
Archangel of Thune
"Target opponent draws two cards, then you draw up to four cards. That opponent may repeat this process as many times as they choose."
Trade Secrets
This Lotus card that adds mana does not have a mana ability
Lotus Cobra
The previous ruler of the "most popular 5 color commander" spot, and a creature that hates green creatures all the way to the top of their owner's library
Kenrith, the Returned King Crab
This powerful card and edh format staple was part of the Reserved List, until 2002 when all commons and uncommons were removed
Sol Ring