What are some Pauper legal cards you think are really cool, but haven't found a use for (at least not yet)?

Here are some of mine:

[[Cavern Harpy]] – So much ETB shenanigans!

[[Sultai Emissary]] – Nice value card and possibly a really cool payoff if you have something good on top of your library.

[[Moldgraf Scavenger]] – Pauper Goyf??