mtg where do discarded cards go Why you think there are no that make the opponent discard cards in runeterra? I used to play magic arena and there are many cards with this effect and the If I have 8 cards

This is one of the most used definitions, I have seen, which makes sense seeing that Wizards themselves use it

7 Daisy Duck, Pirate Captain Enchanted - $107.39 Pirates are the name of the game with Daisy Duck, Pirate Captain, giving you a solid incentive to build a Pirate deck off of this card alone

Her first gives one of your legendary creatures vigilance, lifelink, and indestructible until your next turn, acting as the ultimate protector

From Knights vs

Lucky, The 13th Puppy This deck excels at having a wide board with too many characters for your opponent to deal with, and Lucky, The 13th Puppy helps you accomplish that, then rewards you for doing it