Yes Oath + Guide doesn't work otherwise I would play them.
Annother thing I am unsure about is the right creature configuration in Oath. Is it worth to run Griselbrand without Key + Vault for winning on the spot? Are Emrakul or Blightsteel Colossus needed for not decking yourself? And how good is Niv-Mizzet, Parun?
The competitive unpowered deck is Eldrazi. Followed by different varieties of hate bears, and Landstill. This is because these decks have an inherent ability to take advantage of the Null Rod effect.
Oath looses its best hands of turn 1 Orchard+Oath.
I don't understand the allure of playing Mox Diamond as this is just a worse version of other moxen. Spirit Guides at least have some edge cases of being better.
Ok I understand. I said it in my opening post, that I just dislike Eldrazi. To be true I hate them in Legacy and can't ever see myself playing them. But I am really open minded for Landstill. I play Miracles in Legacy and really enjoy it so playing any kind of Uw Control strategy would be nice for me. Same counts for an Uw or Esper hate bears, where I can play Force.
This seems like a starting point:
It looks like TakeYourT1me plays the deck a lot. You only have to cut 3 moxen, Ancestral, Time Walk (and Moat out of the board if you don't have that from Legacy).
UR Delver is reasonable without power - I played it in a side event at SCGCon last summer and had a good time. @Thewhitedragon69 is right that you absolutely won't be optimal without Lotus et al - you're giving up all your most busted plays, and you'll have a harder time clawing back into the game when you're losing - but you'll still be able to play and win games of Magic. Access to stuff like Null Rod will do a bit to close the gap between you and the powered players, and you can mess around with cards people don't normally play around in Vintage (Daze, Price of Progress, etc).
I personally believe Eldrazi is the best answer because it synergies well with tomb, city, null rod, and Cotv. Accepting that you do not want to play that my gut tells me that some sort of Mono red blood moon deck is the way to go.
For the most part the deck does not want power. The only 2 pieces it really tends to use are lotus and Ruby, but I think an argument could be made that the optimal list would not play them over SSG or even ESG because they have no counter synergy with Null rod or chalice. I have no idea what that list even looks like now day but I would consider starting out getting the following cards and trying some stuff out
4 Blood Moon
4 Simian Spirit guide
4 Ancient Tombs
4 Null rod
4 Magus of the Moon
4 Chandra, Torch of Defiance
4 Lightning bolt
4 Light up the stage
4 Grafdigger's Cage
4 Red Elemental Blast
4 Ricochet Trap
4 Mental Misstep
2-3 city of traitors
X Blood sun
X Damping sphere
X Fiery Confluence
X Vexing Shusher
X Goblin Rabblemaster OR Legion Warboss
X By Force
X Ensnaring Bridge
Thanks for the deck suggestions. I am leaning more towards Landstill, just of personal preferences, but I will also try out the Mono Red list for sure. Both seem like the easiest decks to adjust into an unpowered deck, Mono Red is it already.
And if someone has an up to date unpowered Delver list I also would be glad about it. Than I have three starting points for tinkering arround whit them and see who it works out for me.
I have to say thank you to you guys again, you were a great help to me