He also synergizes with the Mutagen mechanic natively, making this card a valuable upgrade for the TMNT preconstructed deck as well
Its particularly awesome when you give your Relentless Dead deathtouch, since it takes two creatures to block it and its just coming back anyway
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
For example, if an effect tells you to create a token "tapped and attacking," the additional tokens will also be tapped and attacking
That being said, early adopters didn't necessarily need to buy heavily into the set given the overwhelming number of reprints if they played casually, but the option was there if they wanted to update their inventory
Elementals are the biggest winners here and Changelings can pick up a lot of these effects too