Experimental Lab // Staff Room is a solid option for counters decks, but at this point, we have so many solid options that its entirely based on flavor and what you have in your collection really
The same flame burns in you. Kroshkar, Gruul shaman Illustrated by Scott Murphy Standard Not Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
You can also just slot this guy into Mono-Black Devotion with a splash (instead of Desecration Demon, perhaps?) where he does a whole lot more than Erebos, God of the Dead
Mizzium Mortars 9 A bit of a dull card but a fully game breaking one
This is also a great time to get any food, drinks, or supplies you might need for the event, like sleeves
"Destroy" effects are far from the most reliable removal in a format like Modern, but there's a lot to be said for any card that replaces itself, especially at this cheap a cost