The Good First let's look at what the stock list does well so we know what to keep untouched during upgrades
Now Felidar Sovereign deals 4 damage to Jaya, which destroys it
In our version of the story, the Weatherlight unknowingly travels through time trying to get back to Dominaria to warn them of the upcoming Phyrexian invasion (finding it has already happened, and the Phyrexians won), and there, they meet a crew member that had gotten left behind on Rath (stranded when he helps the Weatherlight escape through a portal), now old and wise
This and Ancient Adamantoise are definitely build-arounds, as the average deck may struggle to get to 8 mana consistently
In addition to the wrath spells and indestructible creatures, there are about a dozen mana acceleration spells to help you start using your wrath effects quickly (mostly green spells to fetch your other lands, as many of the mana acceleration artifacts would die to your other spells)
You have to make sure a card with multiple arts like Swords to Plowshares uses the correct version, in this case the Ice Age print with art by Kaja Foglio