In grindy matchups, I like getting two with a Ranger of Eos to keep the card flow going
(A creature with menace can't be blocked except by two or more creatures.) At the beginning of each upkeep, if a player cast two or more spells last turn, transform this creature
It's basically a build-your-own-combo card, but also has the very unique effect of taking on the triggered abilities of other cards, something I only recall seeing on Idris, Soul of the TARDIS
7 Tinkaton ex (Special Illustration Rare) $30.99 Rising The Ranks Tinkaton is one of the best new Pokemon from Paldea, featuring an unusual design that combines cuteness and strength
And the cards stay there forever and you can spend your mana any way you like
While it could sneak into sideboards as a one-of Eldrazi / Affinity hate card right away, it's more likely that Infernal Reckoning will stay on the sidelines for the time being in favor of more flexible removal but can be a potentially potential option for the future if the metagame moves in a certain direction