That red doesn't go away until the end of your turn, meaning it's free to use in combat for a sneaky combat trick or surprise Shock
It doesn't sound explosive, but it gives you a way to bypass the standard restriction on how many lands you can play per turn
They also see play in lots of different typal decks, death and taxes strategies, lifegain, and prison/stax
When I was first theorycrafting this deck, I discovered that all the white cards that produced tokens that came out before Throne of Eldraine did not specify the species type, resulting in a bunch of generic tokens that only have a profession
Against the right noncreature spell heavy deck, however, this spell can be a vital roadblock in their planned path to victory