"Silent Swordsman LV3" will negate the effects of your opponent’s Spell Cards that target it, whether that Spell Card targets just "Silent Swordsman LV3" (such as "Soul Exchange") or multiple monsters ("Different Dimension Gate").
"Silent Swordsman LV3" will negate the effects of your opponent’s Spell Cards that target it, whether that Spell Card targets just "Silent Swordsman LV3" (such as "Soul Exchange") or multiple monsters ("Different Dimension Gate").