@nungnum I've been running it in place of some of the Null Rods to improve the redundancy of those slots. It's a trade-off since Null Rod has been much stronger, but multiple Null Rods do nothing (ha!). Multiple Damping Spheres add to the storm tax, but it's a much weaker effect. I took my list with four Null Rods, split two and two between maindeck and sideboard, and swapped in a maindeck and sideboard Damping Sphere.
It looks like @POXEVERYTURN has removed himself from the website. I'll try my best to contribute, but I don't play the deck much anymore due to testing a variety of strategies instead of sticking to just this one.