This is a straightforward deck: play four Krenkos, double goblins every turn. This very first version does not have enough Krenkos, is lacking goblin lords, and does not have enough goblins. It's all I can do with the starting selection I set out for myself as a first deck-building limitation.
Without Krenko, this deck stalls badly.
With Krenko, ridiculousness ensues!
You get the picture: