[Doctor Oswald Superzapper]

1) Unites: They are the best, since they can be used anywhere, and don't require any type of gag to use.
2) Pink Slips: Since you can kill any cog with them. Enough said.
3) Summons: Good for calling invasions in mints, etc.
4) SOS Toons: Even though they are pretty good, unless I have to use them, I probbably won't. It's hard to tell a toon what the card is or it's effect.