When I was in high school, I had a math teacher who told us to listen up, because no matter what we did in life, math was going to be important
However, the card can be stacked on top of other Rafikis to bring that cost down, and the versions currently in the game are all Amethyst to make that a little easier to pull off
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Given this card's special status, it's likely that the recipients kept it in good condition, meaning most copies you find should be in a well-preserved state
The ability to pay mana and ping each opponent isn't incredibly powerful, but it is a way to keep things rolling in decks such as Rakdos, Lord of Riots or the more recent Ob Nixilis, Captive Kingpin without having to have spells or other nonland permanents around to help generate life loss
You cannot cast a sorcery in response to another spell (you'll learn about this idea later)