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They are more color-intensive, so they can only be cast in a limited variety of Commander decks, but in return, they can destroy a wider variety of targets than mono-colored removal spells can
This classic card can be very effective, and if your aim is to make your opponent deck out, its downside can be an advantage
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You can force that by maximizing Soul Charge and Kuribandit, but then that only serves to make your opening hands more inconsistent, because having 2 of either of those cards is generally a bad thing
There is some planning needed to play a lot of these powerful cards, but they are well worth the effort