The "(∩ ͡⎚ ͡⎚)⊃━☆ﾟ.*" emote is a Japanese emoticon that represents a person performing magic or casting a spell. It is often used to express excitement or awe towards something impressive or unexpected. The "That guy really uses magic" emote likely refers to this emoticon and implies that the person being referred to is skilled or talented in some way, as if they are using magic to achieve their feats.