19. Twinrova (The Legend Of Zelda: Orarina Of Time)
https://www.youtube.com/watch?v=Ly3DvrMoEQ8 The cackling witch duo of Kotake and Koume confront you in the closing moments of Ocarina of Time's Spirit Temple, teaming up in order to end your life with their combined might of freezing and fire magic. Collectively known as Twinrova, the two of them circle around you like a pair of hungry vultures looking for a meal and target you with their distinct magic ability. What makes the battle so much fun is that you must use your newly acquired Mirror Shield to reflect the opposite magic back at the other, which creates a very distinct and exciting strategy to mess with. The constant fear of having to stay alert, not knowing which one is going to start attacking you, it's a unique feeling all its own that makes fighting Twinrova fun and challenging all at the same time.