I must sound like a derp because of that typo. Getting 3 SoR is still difficult. While SoR can make it faster, the unreliability doesn't make up for much. Even if it grants 3-4 TTWs, the reliability of SoFre will make the average TTW lower in the end.
On topic: I've used SoBe in other shard golem decks as well as sometimes tried a fire mark. The only thing that your deck seems to stand out to me amongst those others is that you have only 4 SoI, and splashed in 2 longswords. That and you have actual stats for your deck. Also, due to how SoBe works, I think this is only very powerful as an AI3 killer (Very good one). In PvP, SoBe helps out your opponent too much.