yugioh myutant cards M-05 - PHRA-EN084 - Ultra Rare When your opponent activates a monster effect (Quick Effect) Myutant GB-88 - Phantom Rage

They do not exist on the card itself from the start

Since adding answers to a 249-card deck post-board would have minimal impact, dedicating the sideboard to a Karn suite makes perfect sense in this case

A card like this can suffer a 7 grade just because of the amount of whitening

If there is a monster in the front line, the opponent cannot select the monster with the lowest ATK as the attack target

If your opponent knows that you're running Question, then they can theoretically cheat by checking your Graveyard at any point before you actually play the card, which is something that they're normally allowed to ask at any time