Ruled by Magic - dubcon, physical punishment, humiliation, orgasm control/denial, forced public exposure
Owned by Magic - sexual assault, dubcon, sadism, brief, off page mention of a death by drug overdose, degradation/humiliation, physical punishment, orgasm denial
Joined by Magic - dubcon, physical punishment, orgasm control/denial, death (not of main character), bondage used for punishment
To Collar a Queen - noncon, dubcon, physical punishment, orgasm control/denial, death (not of main character), bondage used for punishment, sex slavery, sex trafficking, captivity