as Game said Druid is a good option:

For hell Cows aswell. I tried it with Wind/Fire/Werebear/Crow Druid. Even with crappy gear you can complete hell cows with 8 players ingame. For me FireDruid is the best option with crappy gear (wow, never was expecting to say that) bc cows have no immunities.

Your are playin a summoner:
Just max skeletons and mastery and use CE, the kill speed is insane.

For me (once again) cow hell is the best place (normal content) to mf or i could just say mfing without mf.
Just create a game and park some other chars there. Runes and blue organs (thats what you want and get) also maybe some good rares.