Its sort of the game designer's way of signaling, Hey, this card is important! Every new set of cards that comes out takes place in a different world (called planes), so the legends of each plane tend to pop up whenever a new set comes out in a plane the game has already visited
I think of game design as an art form, and feel that Im still learning every year how to get better at it. Where do you find your inspiration
Deny the Witch This four-cast instant costs three colors of mana but is very strong with the ability to counter any spell or activity and then force that person to lose some life
Its also another card that you can find for a much more reasonable price with different variants as low as $10 if the collectability or alternate art variant isnt important to you
Constant Protection Generally speaking, constant protection is the best way to go when you want to safeguard creatures against removal
Seriously, you do not have to sell me very hard on "play a blue card that tutors for a bunch of things." For those of you who wish I would get back to talking about real decks, dont worry