This is an updated version of a Drytron Deck that I found a while ago but since CAB got limited I had to change it about, I've replaced the cards with the Drytron Ritual Monster which is basically a Harpie's Feather Duster and also placed some Twin Twisters in there to stop your opponent from Mystic Mining you as well as removing the Pre-Prep of Rites as it's no longer needed and replaced those with the Drytron trap which isn't half bad.
The deck itself is fairly simple, to special summon Drytron cards then Ritual Herald out and get Vanity's Ruler out on turn 1 which is actually pretty easy, make sure you have at least 1 fairy card in your hand at all times to stop you opponent from activating anything with Herald's ability. Then once your opponent is locked out you can begin dealing damage, don't get too full of yourself and summon everything in your hand, you need those negates.
Use the field spell to get out Nova to then summon a Drytron from your hand, Delta is very good for draw power and Gamma will instantly get you the Drytron Ritual Monster out if you summon him correctly.
Honestly the Extra Deck isn't really necessary but will help you out in a tight spot, like linking to Unicorn or Pheonix if you need to get those numbers down in you've been Mystic Mined.