Unless your opponent has an answer for pretty much every creature you put on the battlefield, it can become a game-swinging beater frighteningly fast
Teferis Moat is one such example where the reference is quite clear, although it puts a different spin on things by caring about the color of creatures that want to attack you
Goblin Piledriver Rarity: Rare TYPE: Creature SUBTYPE: Goblin Warrior CMC: 2 Mana cost: USD: $31.30 EUR: 26.03 TIX: 1.43 EDHREC RANK: 6433 (1/2) Protection from blue (This creature can't be blocked, targeted, dealt damage, or enchanted by anything blue.) Whenever this creature attacks, it gets +2/+0 until end of turn for each other attacking Goblin
Chief among them was Murder. There I was, ready to win, and then my creature was murdered by the Murder card, and the entire game changed
They bear weapons ready to sacrifice the creature they deam a weak link, perfectly reflecting the card's name