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Gravekeeper, Elemental Hero, etc.), and so much more

Daniel Holt, Senior Game Designer: Strixhaven: School of Mages tested the waters on how every color pair could interact with instants and sorceries

This means that if you dont want to see a card in your opening hand, you want to play a card at 1 to minimize the chance of seeing it

Blackfeather Darkrage Dragon X DARK Level 8 [ Dragon / SynchroEffect ] ATK 2800 DEF 1600 1 Tuner + 1 or more non-Tuner monsters Once per turn, when you take damage: You can send up to 5 cards from the top of your Deck to the Graveyard, then if any monsters were sent to the Graveyard by this effect, this card gains 400 ATK

You can read more about their decision on their wiki.