RIP shop prison forever.
It only just occurred to me what the ideal play pattern in shops is when they have a good hand. A lot of the time your opponent is going to play shops, then mox, then Foundry inspector, then sphere. In those cases you can cast this with sphere on the stack and remove the mana they perhaps needed to have a good turn 2. It may actually be advantageous to leave the sphere and nuke the support, especially if you have a waste effect in hand for their land since sol lands cannot cast most of their creatures on their own.
I literally cannot imagine what the red one does now outside of being a better Pyrotechnics.