mtg lost caverns commander decks The of Ixalan Bundle (EN) 1 strategy insert The Lost Caverns of Ixalan:

For each even result, put two -1/-1 counters on that creature

It was introduced with an extra bit of marketing, which you can see here: So there are hidden, real Legends cards (that WotC somehow found in an old warehouse) in 3% of Collector booster packs from Dominaria United

To make sure you have enough interactions with your graveyard, self-mill is a must

But if you're a Moxfield master and you just like brewing around all the new toys, the Universes Beyond sets from 2025 should keep you busy for quite some time

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Jaya's +1 can make a 1/1 Monk to block future attacks and swing, with prowess too by the by