Well, in the time since I bought Dark Ages from my FLGS, I keep trying to find a realistic way to use Donald X's favorite card, Rats. It's so much fun to play! And so bad!
So here are some conversations between me and myself, designated "Johnny" and "Spike".
Johnny: Rats goes great with trash-for-benefit cards! Altar is a trash-for-benefit card! Let's get both!
Spike: Altar doesn't give a rat's ass whether it's trashing a Rats.
Spike: Okay, a 3/4 opening, no strong 4s, so we'll get Silver and... another Silver, right?
Johnny: No, a Rats.
Spike: You're insane.
Johnny: Gotta trash that Overgrown Estate somehow, right?
Johnny: ...and then if everything lines up, we can use Steward to trash two Rats and draw two whole cards!
Spike: Congratulations, that's worse than a Moat. And if you didn't want the Rats, you could have not gained them.
Johnny: OH MY GOD I CAN PROCESSION RATS
Spike: Maybe with that $5 gain you can gain a Laboratory. You know, something that nets you one card and doesn't fuck up the rest of your deck.
Johnny: Okay, yeah, and then I'll Procession the Lab into an Altar! That will fix everything!
[edited because I got the Spike name wrong at first]