At the end of Chapter 2, watching The Rake get his creepy ass handed to him by Moon is very satisfying to anyone who's ever been scared of the little scuttler.
When fighting Entomon one of the Seven Great Youma Mars nearly char-broils him alive in his own shell, and then Moon stabs him and fries his insides with a power blast. Had her and Luna not fought over whether or not to heal him, then he wouldn't have escaped.
Entomon is himself a walking CMOA. When Artemis first sees him, he screams in sheer panic, and his name alone sends chills down High Keepers' spines.
During the Doom Bus operation, Mars burns Zoicite so badly that he needs to be hospitalized for some time.
Phantom Mask gets one at Dreamland while fighting Nephrite when he reveals that his illusion is actually a solid matter projection, and it nearly gets the general.
In Chapter 32 Orion comes within inches of killing Jadeite, and reveals the way to do so to Mars. YYMV, but his talk with Mars can also double as a CMOH
Earlier in the chapter Sailor Moon used what was practically a Getsuga Tenshou (from Bleach).