In 굴레, 고삐 Gossip, how did Twilight Sparkle use her magic to comb her mane with a brush yet she can't use magic later in the episode?

Who knows it is magic anything is possible

She probably decided not to use her magic later in the episode, the poison joke may not have had an effect on her magical ability.

If I recall from most unicorn myths, 유니콘 powers come from their horn. Twilight's horn was affected 의해 the poison joke, which disabled her magic.

Explanation: