Get Sheik's opinion.

While this was definitely useful, Link felt like Sheik's opinion would be needed. He seemed to understand magic better than Link did, and hopefully he could tell Link if this mask was dangerous, or had any side-effects. He wasn't sure how to contact Sheik, but as he walked down the road he was suddenly forcefully grabbed and pulled into a dark alley. Link readied himself for a fight with the assailant, but to his surprise found that it was Sheik, who didn't look happy. "Where's Link?" he asked, angrily. "Where have you taken him, you Gerudo witch?"

Somewhat offended, Link told Sheik that he was Link, and that this was the effects of a magical mask.