The obvious way to win with Molten Duplication is using it to create a massive amount of copies of Dualcaster Mage that all have haste
The packs to pull these cards from are hard to obtain after the initial distribution, and this can lead to outliers
The Gearhulk is just great with powerful expensive instants and Mystic Confluence is one of the most expensive and powerful instants you play without the Gearhulk synergy
For 4GG, you reveal the top seven cards of your library and look for any one of twelve relevant keywords (haste being the one Kathril doesnt mention), putting a creature with one of those keywords onto the battlefield and the rest into the graveyard
While getting benefits from creatures dying is the default Orzhov strategy, as seen with Elenda, the Dusk Rose and Teysa Karlov, even these legendary creatures go above and beyond to either support creature tokens directly or develop a powerhouse creature that can neither be left unchecked nor allowed to die
The plan was to stick to a booster pack per location