Convergence of Dominion makes unearth abilities cheaper, but it likely has other applications outside of this precon
It first made its way into player hands in the Domniaria expansion in 2018 and made some pretty cool decks that focused on permanents that can sacrifice themselves, allowing the player to get their effect every turn
Commander also the format with the most cards specifically made for it, including a new Commander Masters set
Just cast this answer and move on
Illustrator: sui Seadra #90 Seadra (2-Diamonds, Uncommon rarity) is the #90/379 card from the Deluxe Pack: ex set in Pokmon TCG Pocket

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