Train Connection!

Send 2 Level 10 EARTH Machine-Type monsters from your hand to the Graveyard and add 1 "Train Connection" from outside of your Deck to your hand. This Skill can only be used if you begin the Duel with a Deck (excluding Extra Deck) that contains no monsters other than Level 10 EARTH Machine-Type monsters. This Skill can only be used once per Duel.