i use this at corns with a mob of 5-8
boj lv 18 ss lvl 9 and sb lvl 12 u dont need to combo to use it the cool time on boj at lvl 18 is longer enough for u to cast ss and sb then boj is ready again.
when sb is about to end ake sure ur ready to hit the pots button cause the stun will be over and they will attack depending on ur def and if they hit u they can take over half ur hp. if you have enough vamp 1 pot will do cause by the time u use sb again boj and ss will leach enough to fill ur hp back up.