Notes & Combos
Eldlich deck with Winged dragon of Ra, both being level 10 helps with xyz plays.
Due to Eldlich needing no normal summon, sphere mode can be used without any worry, can also be attacked into with skill drain and also plays around skill drain if on your field to go into Ra. If you Sphere mode your opponent then use gozen match/ rivalry they will be locked to Divine while they control Sphere mode.
Issues compared to normal Eldlich: less traps means bricking more. Ra being Divine can hurt you with gozen match/ rivalry.
Top Secret Packs used

I'd replace the Punishments and Compulses with Summon Limit and There Can Be Only One (if you can afford it). And replace the Book of Moon with a Pot of Prosperity. Prospy will help a lot in saving a bricked hand. The Compulses in particular are redundant when you're running sphere mode for monster removal.
Remember, your win-con is to draw one eldlich engine card and two floodgates. With this deck, you have a 34.42% chance to open that hand.

I find, "There Can Be Only One" is great as you can have 1 zombie and ra on board, however it messes with sphere mode too R,a and eldlich with the golden land cards. summon limit isn't great for going 2nd. I also don't like too many floodgates as they do nothing against decks that can play around them e.g like eldlich mirrors etc. Compulse and moon are also good going 2nd, and if you sphere a field of 4 monsters they help clear other monsters too make sure their locked too divine. win-con is more 1 eldlich card (or heavenly), 1 floodgate and something to protect backrow