Trade-Incorrespondence at level 8 is his Special Summon, which is relatively loose, so I think it's easy to use
This can often end up with you assembling Land combos and synergies with ease, and even if only one other person gets involved, its more than worth the cost
I think you should follow Sidebaes advice more attuned with putting in totally new cards like Grave Pact and Dictate of Erebos because these are cards you should be running with a sac outlet as a commander
Bujintei Susanowo also has a pretty decent detach effect, allowing you to either search a Bujin monster, or send a Bujin from the deck to the graveyard, both of which can be seriously advantageous depending on what your strategy is
The game consists of various formats, including Standard, Commander, Vintage, and Modern, and continues to evolve with each new Magic the Gathering set release
Obviously, this means that Ugins Labyrinth wont work in every deck, but it does have some homes