It works well because I run several cost reducers like Ugin, the Ineffable, so I can put them into play with Flood of Tears ability and replay most of my board immediately
While the Mothman is definitely the better Commander out-of-box, that doesnt mean that The Master, Transcendent isnt a good Magic card
If you have access to 12 mana, which is not terribly rare in a green deck late in the game, you can decimate your opponents
I managed to win one match - although it was because my opponent disconnected
And sure, sometimes you want to liquidate a whole collection
The Grey Havens + Great Hall of the Citadel The Grey Havens is an awesome land to topdeck if you have to topdeck a land, and Great Hall of the Citadel is great early in a legendary creatures deck