Mistveil Plains is here to reload the goods like key elements and protect from graveyard exiling, and Roadside Reliquary is a colorless land that can be sacrificed to draw a card if you control artifacts and another if you control enchantments, so it can be two cards for one pretty reliably
The main difference is that this isnt done in a very consistent manner, Magic's changes in Standard are smaller and less frequent
Charismatic Conqueror lacks the first per turn limitation, plus the creatures/artifacts dont need to be cast, so you can profit off opposing flicker effects or Treasure creation, so it triggers more often
In the 2025 partner sets Black Bolt & White Flair, a new rarity was introduced
Congregate is the best mass-life-gain spell ever printed
Once she transforms, shes a huge flier with lifelink which should be able to take over a game quite quickly or just trade for a big threat in combat thanks to deathtouch