The legend says that, in a tournament in the early days of Magic, a player read the card and, since there were no specific rules about the execution of Chaos Orb, he tore the card into small pieces and threw them at the opponent's table, destroying all of their permanents
When you discard a madness card, you have to cast it right at that moment , or else it ends up in the graveyard and you've missed your chance
Rakdos, Orzhov, Golgari and Boros include too many control and empowered elements from non-creature sources to really qualify
I dont think this first one needs an explanation (on why its disturbing I mean - it defintely needs an explanation from its illustrator wth is going on here)
Notably, if Optimus Prime is your lowest toughness creature in play, he can even Bolster himself, making a Voltron approach a reasonable strategy