If you control a "Number C" monster, this card's activation and effect cannot be negated
Another thing most collectors do is put their cards in sleeves, like the Grookey Sleeves , to keep them stylish while protected
Another notorious banned card introduced in this booster is Fiber Jar, a Flip Effect Monster that, when flipped, causes both players to shuffle all cards from their Field and Graveyard into their decks -- essentially resetting the duel, excluding banished cards
Say, for example, that your opponent is playing a deck with Goblin Rabblemaster, and turn four is a point in the game where you're likely to fall hopelessly behind if you can't put an effective blocker onto the battlefield right away
If damage from a noncreature source is prevented this way, Comeuppance deals that much damage to the source's controller
Best wishes