Into the Darkness Below [SS05-ENS02] Common

Activate this Skill during your Main Phase. Once per turn, you can discard 1 Normal Fiend Monster, then use 1 of the following Skills.
• Draw 1 card, also flip this card over.
• If you have 4 or more Fiend Normal Monsters with different names in your GY, add 1 monster from your Deck to your hand, also flip this card over.