Install Nova Launcher, then pick "Activities" widget and drop it in your homescreen. Now click Settings icon and try to find the activity that changes Lockscreen effects (In my device running Lollipop is called "Unlock Effect / UnlockEffect Activity"). Pick it, you should see an icon in your homescreen. Click it and you will be able to change your unlock effect. Probably since MM is beta this feature is not enabled in Settings app, but buried in the app code. Please tell me if it Works since I don't have my Note 5 atm.