The Side Deck, as more themed decks had become the norm by this point, contains a lot more cards specifically targeted at countering particular decks
You can only activate 1 "Dark Magic Inheritance" per turn
Extra Deck 15 Forbidden Cards Forbidden Herald of the Arc Light X LIGHT Level 4 [ Fairy / SynchroEffect ] ATK 600 DEF 1000 1 Tuner + 1+ non-Tuner monsters Any monster sent from the hand or Main Deck to the GY is banished instead
Warrior lady, which can remove a large monster or prevent a monster whose effect activates from the graveyard from going off, Mystic Swordsman LV2, who deals with facedown monsters, Blade Knight and Zombyra the Dark, who have some of the highest attack values on a normal-summon monster, Exiled Force, a clean answer to nearly any monster, and many more
Astrograph Sorcerer can choose 1 monster that was destroyed this turn and add a copy with the same name from your Deck to your hand, while Chronograph Sorcerer can Special Summon monsters from the hand
This effect doesn't come in handy too often but it could help you beat over an opponent's problematic monster
