Powered Mirror, Aqua Teacher/Trivia

"When opponent casts a spell during his turn" - 'Mirror" trigger creatures. (Each of these creatures has an ability that triggers when your opponent casts a spell during his turn.)
 * — Ribulamira, Mirror Wings
 * — Powered Mirror, Aqua Teacher
 * — Doterabara, Phantom Mirror
 * — Hibiki, Explosive Mirror
 * — Miralles, Mirror Style