Awaken the Ancient Red Deck Wins is always a popular Standard strategy, even if it isn't always the most powerful
Doc Ock, Evil Inventor (SPE) $29.50 Doc Ock, Evil Inventor is a beefy creature with an impact on the battlefield, if your opponents let you use it effectively
They are not meant to be the chase objects 10 years from now, we want these Street Fighter ones to be the cool ones that have a little bit more cach and are a bit more interesting to see
Similarly, cards like Clattering Augur that return to your hand can be used to repeatedly pay the discard cost
Life loss effects already pressure your opponents
The Monster Effect is interesting as a reactive anti-chain tool, but its situational (only Chain Link 3 or higher) and requires setup, making it less consistent than broadly powerful negation monsters like Apollousa, Bow of the Goddess, Baronne de Fleur, or even Subterror Guru in dedicated Flip decks, which provide more immediate and flexible disruption