This was originally built by talismancer as a pauper deck (I've got the original decklist if you're curious) - that's a deck which only contains common cards (as opposed to uncommon or rare). It's one of the more effective decks I've got and can reliably hold its own in a duel - most of mine are too slow or disorganised for that. This mainly comes from the very simple win condition, which is to boost the power of a Spikeshot Goblin by a silly amount and then use its ability to whack players in the face for a corresponding silly amount of damage (it's quite capable of throwing 20 points of damage at someone).
As to the current state of it... well, once upon a time it had an official 15-card sideboard. That appears to have evaporated with the exception of the four Gerrard's Irregulars which have been eaten by the deck upsetting the land balance. I'm not sure I want to get rid of all of them as that leaves it a bit light on creatures and the haste ability is nice... so perhaps swap out one each of Bonesplitter and Firebreathing, and keep two of them? The rest is fine though a second Furnace of Rath would be nice (probably replacing an Iron Myr).
And the Loxodon Warhammers? Those I scored from choros to troll opponents with, because why stop at just dealing double-digit points of hard-to-block damage to someone's head when you can also gain that much life at the same time?