While typically known for its aggressive creatures, damage-based removal, and burn spells, red has somewhat of a different claim to fame in Magic: The Gathering's Commander format
Blossoming Tortoise / Restless Cottage A slight cheat, but its hard to think about one of these cards without the other
If youre extra lucky, you can find a Fractured Foil version instead
However, with Anti-Venom, the more damage you take, the better, making Inquisitor's Flail only have upsides
Storm decks tend to use black mana a lot, so its especially good there
In short, if youre going to play this card, take a little extra time to assess your playgroups power level and demeanor when deciding how to use it