I could easily see this card staying at around this value for a while given the time-tested nature of cards with similar effects
Similar to the boring ol human Kenrith, the Returned KingZacama has a suite of abilities you can spend your mana on
It stayed printable and buyable through 2022, went out of print during 2023, and that's when the market woke up to what it had: the Eeveelution alt-art set, with no reprint coming
Extended Art All the single-faced rares and mythic rares in March of the Machine that don't appear in other Booster Fun treatments appear with extended art in the Collector Booster, in traditional foil and non-foil
It can also counter multiple things and becomes a grave threat when the stack is getting full and a counterspell battle (or some other action) happens between opponents in a multiplayer game
Commanding Conclusion Abaddon the Despoiler | Illustration by Johan Grenier Cascade is a fun mechanic, especially in Commander, where the singleton decks are harder to optimize to always get Living End or whatever