How does one play this deck vs seism? I never get enough quanta to play either enough poisons or sosacs...
It helps if you're playing a version that uses both pends and towers, for starters, but:
Play one tower at a time until you're sure he's out of earthquakes - one tower (the turn after you play it, even if it gets quaked) is enough to play any one death card in your deck. Get arsenic out ASAP. If you get unlucky and bottomdeck all of your arsenics, you've probably lost. Once you're fairly confident he doesn't have any more earthquakes
right now, if you've got an arsenic out or are otherwise feeling lucky, feel free to dump any additional towers/pends you've got and keep your fingers crossed that you can put together a fairly good quanta pool before they get quaked. If you can manage an early arsenic, you can survive without some of your poisons, so if you're not already in a situation where you're confident you can sosac-chain, you might want to hold off on the poisons. You probably don't want to draw off your sundials much (if at all) due to stone skins. If you can manage it, an early sosac will force him to burrow his shriekers, which will remain burrowed indefinitely, which helps a lot in keeping alive. If you can manage it, it's a good idea to hold some sundials until you're confident that your quanta pool will take you through the game just in case you have bad luck with getting enough for your sosacs.
TL;DR: get arsenic ASAP, don't draw (usually) from sundials, use pends, no more than one each tower/pend on the table at a time until you're sure he has no quakes in hand.