My suggestions:
- Remove Black Hole (you don't have a ressource limitation strategy).
- Remove Earthquake too.
- Fahrenheit is anti-combo with Steam Machine.
- You need a Protect artefact on your Eternity. You may want 2 of them, it's strong in stall decks.
- You may want a Quintessence to have your kill protected.
- Butterfly effect is stronger than Pulveriser, because you want to keep the Weapon slot for Eternity, giving a second life to your scorpion.
- Add a 5th Hourglass, in such a big deck, you want to draw to be able to have a Shield/Sundial in time.
- Maybe try to play more Pandemonium/Plague/Firestorm to get rid of masses.
- Fill to 60 with Nova/Supernovas if you can.