Populate, Proliferate, Persist, Oh My! (Cayth, Famed Mechanist Deck Tech)

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[@KeyserTheRedBeard]

I killed that thumbs up icon on your video. Stunning upload, Geek 'n' Seek. Always keep the exceptional work. Eager to see your next one from you.

[@TheHawkhead1HunterK]

So, rules clarification question:
With Cayth, Goblin Bombardment and Cauldron of Souls on the battlefield + some ETB payoff creature, would the rules interaction not work like this? :
1. Tap cauldron of souls, granting all creatures you control "Persist" until end of turn.
2. Use G.B. to sacrifice ETB creature that now has Persist, returning it to the battlefield as it dies w/ a -1/-1 counter on it, now a "new" creature.
3. Cayth triggers and uses Fabricate to put a +1/+1 counter on it , cancelling out the -1/-1 counter from Persist.
Because the creature changed zones, and it re-etbs as a new creature, wouldnt it NOT have Persist because it isnt the same creature that was originally targeted with Cauldron of Souls?
If that's the case, it can't go infinite if there isn't a way to untap cauldron of souls, but I suppose a once per round free reanimation effect in Jeskai is pretty good.
Obviously for creatures that ALWAYS have Persist, it works differently, but I just wanted to check.

[@stevepiratethe7708]

First ruling on Gatherer about this card
5/1/2008 If a nontoken creature that gains persist this way is put into a graveyard, that card will be returned to the battlefield with a -1/-1 counter on it. However, because it's a new object with no relation to its previous existence, the returned creature will not have persist.
So you are correct in the assumption that this decks combo specifically requires a creature with persist on it of which there is only one in the deck.

[@geeknseek]

Correctomundo

[@seanriling1352]

This lord of the star trek deck looks kinda mid

[@geeknseek]

Watch how you speak on Harry Potter you scruffy looking nerf hearder