Paired with Ruby Medallion, it effectively gives extra copies of reducers, so its easier to chain rituals and finish with Past in Flames, Wish, Grapeshot, or Empty the Warrens
I do believe others playing Ramunap Red will also consider the mirror match when it comes to how they design their decks, which makes me believe we will see more copies of Chandras Defeat, Pia Nalaar, and Aethersphere Harvester in sideboards
Torrential Gearhulk is another nice body to end games with that provides repeatable flicker value, too
Additionally, modal abilities that can be repeated, like those of Hullbreaker Horror, are excluded
When it resolves, you get to pick an opponent and dig through their library until you find a creature you want and you put that card directly into play on the battlefield under your control
There are 51 unique new cards spread across the five decks (some cards appear in multiple decks)