Golgari can brick off the opponent's offense and play enough removal to keep the battlefield empty, but also close the door when needed, unlike Rakdos, where you lose access to giant green creatures
Elementals are the biggest winners here and Changelings can pick up a lot of these effects too
I had played a lot of the Burn version of the deck around June/July as I really enjoyed playing the deck, but ultimately I felt the Rakdos Midrange matchup was too bad, and I went on to explore other Red builds, as discussed above
He also synergizes with the Mutagen mechanic natively, making this card a valuable upgrade for the TMNT preconstructed deck as well
In addition to this, you can challenge an exerted rival character which you resolve instantly, exerting your character and then having both characters deal simultaneous damage
For example, if an effect tells you to create a token "tapped and attacking," the additional tokens will also be tapped and attacking