They're not a requirement for a good deck, but mythic rares can be the bombs and strategy-accelerating cards you need
The big difference is that stax cards usually inhibit your opponents' ability to play the game in some way, whereas pillow fort strategies don't normally interfere with the way opponents develop their own individual gameplans
Tribute 1 Insect monster from either field equipped with an Equip Card, and if you do, Special Summon 1 Insect monster from your Deck, ignoring its Summoning conditions
Galarian Linoone can be obtained from Fantastical Parade pack in the Fantastical Parade set
Mistake is a hard counter to many meta decks such as Virtual World, Fire Fist, and much more, since they all rely on adding cards to their hands to flood the field
The two main colours are white and blue