( * This review was written when only Truth, Lies, Gang of Secrets, Mr. Pigeon 72, Guiltrip, Furious Fu, Sole Crusher, Queen Banana, and Optigami had been released. )
Optigami is by far the best of season four thus far. Previously released episodes of the season have been passable at best, but this episode feels much more like an episode from the show's richest season than an episode from its worst. Sure, the animation is less vibrant and clean, as it lacks the usual bounciness and color as of before, and the dialogue remains forced and unnaturally robotic. However, in what this episode is trying to do, it passes the bar excellently.
It is by no means the show's magnum opus, but the tone of the episode, and the high frequency of multiple events flowing seamlessly after each other in just 20 minutes, makes Optigami such a brilliantly exciting episode. This is what season four should be.
ShadowMoth (well, actually Nathalie) finally had a more-than-decent plan! I was genuinely excited when Nathalie explained the purpose of her sentimonster, and my mind genuinely kept thinking "now they've won; Ladybug and Chat Noir are done for" throughout the entire episode.
Where they lack in animation and dialogue writing, they make up for in plot, characters, and intrigue. I wonder (without spoiling anything) how the show will progress after this one...