In first, when i play my cards do i must add the total stars point and total attack point or a card can only be used for star or for attack ?
If the card has both attack and recruit points, you can use both.
the second i cant find in the rulebook the mastermind effect 'always lead' what is the effect of this ?
If a mastermind has an 'Always leads', the named villain or henchman group must be added to the villain deck as one of the villain/henchmen groups.
the third if i use the effect of a hero (like draw a card or else) can i still use his star or attack ?
Hope that helps!