Here's a humble deck tested only once against AI3.
If you don't mind using a bit more life:
Hover over cards for details, click for permalink
4sa 4sa 4sa 4sa 4sa 4sa 4sa 4sa 4sa 4sa 4sa 4sa 4sa 4vj 4vj 52p 55v 55v 593 593 5bv 5c6 5c9 5c9 5c9 5ii 5ii 5og 5rl 5rl 5rp 5rp 5um 5um 5um 5um 5uq 5us 5us 621 8pn
Spam devourers via mitosis and dominate with quakes and black holes, use steam machines as final damage.
Is 3 Mitosis enough? I don't know, maybe not.
At least this beats AI3 sometimes if you insist on using original, creative darkness-bows.
Build an immo-golem if you just want to grind
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P.S. I'm not so new to the game...