I wanted to build around Journey to Eternity because I pulled a couple in the Prerelease and it seems fun to play with. This is not a reanimator deck where you want to get high end creatures for cheap, but rather one based around grinding you opponent out with value creatures that never truly die.
On the low end of the curve you have Dusk Legion Zealot and Seekers' Squire to filter through your deck to find whatever you need. Gifted Aetherborn is also here because its just good. Also, being able to continually reanimate a deathtouch blocker seems sweet. Having a 2 drop on turn 2 is important because ideally you want to be tossing a Journey on it on curve.
Yahenni, Undying Partisan and Defiant Salvager both serve as ways to kill off you enchanted creature to flip Journey and when you have an active Atzal, Cave of Eternity they can put things in the graveyard you want to reanimate again. I'd run 4 Yahenni because its better, but its also legendary and I don't want to get stuck with copies in my hand. Thus, a 3-3 split.
Ravenous Chupacabra is really good without having to take in to account the fact that you can reanimate it. With an active Atzal it becomes even better.
Verdurous Gearhulk and Noxious Gearhulk are your finishers. They hit hard and have relevant ETBs perfect for reanimation.
Your noncreature spells are Fatal Push and Hour of Glory to deal with whatever you need to. I'd run Vraska's Contmept, but I'm not made of money.
The sideboard has a decent spread of answers for a variety of things.
I'm definately taking suggestions as I haven't played standard in a while and I don't know the format too well.