Talk:Black Flame Bullet/@comment-26844005-20180901164904/@comment-36375292-20180901180237

By "Each monster", I meant that only one monster is accounted for this card's effect to activate. If it were a link attack, only one monster is accounted. It doesn't matter how many monsters were in the link attack, only one monster is accounted for its ability to activate. And, its ability only activates once per turn.

So, if you have two set on your field, during a link attack, your opponent mills 2 deck cards. It doesn't really matter how many monsters were in the link attack. The spell only counts one monster. So, if any monster attacks, whether it attacks alone, or join in a link attack, you mill cards on your opponent's deck, equal to the number of this set on your field.