Well you'll want to play arsenic before your poisons, unless you're up against a deck with permanent control and don't have any enchant artifacts. Hold off on stone skins as much as possible, but be careful that they don't drop a lot of dragons or bolts or anything... It's all kind of just guesswork really... I don't know what they'll be using. If they have reverse times, they may use them on their own creatures that you've BB'd... same with eternities. Your shield is probably going to be really important.
Once you've seen their deck once, I'm sure you'll be able to play with the appropriate strategy. If you're lucky and they use a lot of card drawing, you might just deck them out.