With this sorcery, you also get a ton of information about that player’s deck, too. With that level of sneakiness available, Praetor’s Grasp even for a time was tried out by Legacy and Vintage players. It never stuck around in those formats, though. After it rotated from Standard, Commander players became the card’s only audience.
Praetor’s Grasp offers a great deal of utility in Commander, especially in stealing someone’s key combo card from their deck. The best part about this effect is that it can be any card: artifact, creature, enchantment, instant, sorcery, or even land. If played correctly, this effect can both hurt your opponent and help you simultaneously.
The typical card you would target in Commander with Praetor's Grasp would be an artifact, since the vast majority of artifacts are colorless. You don’t even have to know what you’re looking for when you target an opponent; you just choose based on who you think the biggest threat at the table might be.
Commanders that have made a regular home for this spell include Gonti, Lord of Luxury, Mishra, Articifer Prodigy, Sen Triplets, and many others. You don’t even have to be a mono-Black deck to take full advantage of this card’s effect. Still, mono-Black tends to be happiest when it’s stealing key cards from opponents. Praetor’s Grasp is one of those rares you can find for $1 or less and it’s a great tool to have for any Commander player dabbling in Black Magic.