Forum:Swords of revealing light

i wanted to ask a simple question cuz i am confused with everyone else's saying on how this card can be used or even what it does fully. My question is this the card itself says that if played the other person can not attack me for 3 turns but he tells me he can attack with another monster after the card has already been played like if i set it and its in play then his turn he plays another monster to the field can he actually attack me? or does the card prevent any attacks unless a direct attack please someone fill me in on how this card works cuz i am getting nothing online... thanks