Combo Help

Hey guyz howz everybody, Im still working on my art based game
finally got my battle system down and I have some problems with it. I need help with combo system. It should work like this when the space bar is press three times, it play three diffrent MC. oh both the character and the sword are two diffrent Mc and when my character swing his sword at a monster ,my character get damage instead. and I also need help on enimie random movement.