This seems like a very nice payoff for the various descending strategies which, keep in mind can include self mill, sacrifice, and more Giving something -2/-2 when this enters seems eminently doable, and thats already a good card
Lorcana has always been a race to get 20 points, known in the game as Lore, and Reign of Jafar doesnt disturb the meta of racing to get 20 Lore through using readied characters to take the Quest action to score points
In a land matters deck it's a great way to get lands in the graveyard to recur with Crucible of Worlds and other effects as well as net those landfall triggers
Chase Carter News Sheldon's Spellbook Secret Lair raises money for cancer charity with MTG cards in honour of Commander creator Includes reprints based on decks favoured by the Godfather of Commander, as well as appearances from the designer himself
Naturally, there are bombs within the Mouse archetypelike Mabel, Heir to the Craglame , and Manifold Mouse
Not only do I think this is the most powerful strategy for Xantcha, it's also the most fun and on-theme