As a guy that started Yu-Gi-Oh again after a couple of years I fell in love with Drytron's playstyle pretty quickly, as I like playing expensive decks on a budget. This decklist is pretty much the deck that I'm using and find success with at the time.
Ok let's start with the basic combo:
Hand: Alpha, Zeta and Delta.
Combo:
SS Alpha tributing Zeta.
Add Benten through Alpha's eff.
Tribute Benten to summon Zeta.
Zeta eff to add Meteonis Drytron.
Benten eff to add Manju (cause he is a fairy for some reason).
NS Manju and use eff to add Phul.
XYZ both Alpha and Zeta to XYZS Mu-Beta and use eff to send Gamma from deck to GY.
Use Meteonis Dryton to RS Phul, removing 1 meterial from Mu-Beta in the proccess.
Phul eff to get Benten from GY, to make Phul's LVL to go to 6.
Use Phul's eff to tribute Benten to RS from deck Ophiel.
Eff Benten (cause she was tributed) to add Idaten from deck.
Eff Ophiel to add either Bethor or Och from deck (depends on the rest of your hand).
Eff Ophiel to RS Idaten, tributing Ophiel and Manju.
Eff Idaten to add Meteonis Drytron from GY.
XYZ the LVL 6 Phul and the Idaten to XYZS Ptolemy (trust me here).
Detach a meterial to activate eff of Ptolemy to add Benten from GY (detach Idaten here).
Eff Gamma tribute Benten to summon.
Eff Gamma to SS a Drytron from GY.
Eff Benten to add Herald of Ultimateness.
Activate Meteonis Drytron to remove the 2nd meterial form Mu-Beta to RS Idaten.
You get back Meteonis Drytron from Idaten eff.
XYZS a random rank 1 monster (I'm using Lyrilusc-Recital Starling cause I'm broke).
Activate Meteonis Drytron to RS Benten from GY using Delta from hand as meterial.
Activate Benten to add Eva from deck.
Activate Delta to draw a card (reaviling a ritual monster).
Eff Meteonis Drytron from GY to reduce Mu-Beta's attack to add back the Meteonis Drytron from GY.
XYZS Utopic Future using the random RANK1 and Mu-Beta.
Activate Meteonis Drytron to RS Herald of Ultimateness.
And that's the basic combo of this deck. Next turn you can just loop Idaten to make Herald have 6K attack and RS Bethor to boardwipe your opponent's field. And the way to do this is :
Tribute Idaten from field (or Bethor from hand) to SS Gamma (if he is a meterial of Utopic Future just LS a link2) and this triggers Idaten's 2nd eff to boost all rituals by 1K
Then reduce a Drytron's attack by 1K to add Meteonis Drytron.
Then loop the Idaten another 3 times.
And in the end just RS Bethor to boardwipe.
You have enough DMG to win at this point.
That's the only combo that isn't played in a normal Drytron and it's pretty fun.