That's pretty solid right where it is tbh.
Possible changes:
-Swap sundials for unupped sundials. You're really light on time quanta usage right now, and this'll keep them from interfering with the mulligan.
-Remove one death card and one gravity card. You're really heavy on quanta usage in both of those elements right now. I would probably personally choose to remove flesh recluse and black hole, but either option is fine.
-Swap out steam machine maybe - replace with ulthiarid, abyss crawler, or whatever other option you'd like. You're quite heavy on fire quanta use, but late game that'll be mitigated by elite fireflies.
-If you do remove any of the various things I've suggested to remove, you're light on quanta usage for light (kinda, depending on how much you use sundials), time (even if you swap to unupped sundials), darkness, and to some extent aether, so you could do any of swapping sanctuary for archangel/crusader, adding an hourglass (though I wouldn't do this and swap to unupped sundials), adding a second steal, adding a silence/thunderbolt.
-You can also add an extra graboid. This'll strain your earth quanta a bit, but it's worth it even if you only play one of them just cause you'll draw one faster.
-If you find yourself tight on entropy quanta, you can swap the maxwell's for a lycan or an additional SoSe.
edit: The more I think about it, the more I feel like retracting my statement about being light on light quanta usage, so probably don't swap the sanctuary out for something more cost-intensive.