I am liking all of these responses, so many ways to look at it, I would say the character at first will not even know the sword is sentient, bc the sword will hide that fact in order to find out about its new "master"
ok I like where you are going with that. Make it make suggestions as to what to do, then if ignored go for total mind control. Thanks also for the reference in the DMG, I will look that up.
What would you have your players do if a "good" character wants to attune to an evil sentient magic weapon? make a roll to control? not be able to use its magical properties? etc. please advise.
thanks!