So, I lost in a very amusing way. I was down to my last turn on my last (drawn) shield, health bar fully yellow, so I knew I had to draw a shield or die. I had a fairly good chance of drawing a shield though, based on card counting.
And then it happened: Seism rewound my pet gnome rider from the oracle.
The moral of the story: for a (very very slight) improvement of your odds, go use up your oracle-pet before facing Seism
Unless it's something you can get rid of in the fight itself (burrow, suicide attack, etc)
One other thing: when planning your deck, remember that regular aethar pillars and upgraded aethar towers are different stacks, so if you use both, you'll need to protect both.