Grind-intensive Golgari decks frequently find themselves casting an endless stream of removal and hand disruption spells that exchange resources at a one-for-one rate, with a single card or two finding a way to capitalize on the severe reduction of resources that the deck creates on both sides
Facilier, Agent Provocateur is another essential tactic
While the Worldsire doesn't have trample or any other form of evasion, it should be large enough that you can kill anything that crosses its path, and the land ability should be what you're using this for, with things like Valakut, the Molten Pinnacle or Field of the Dead
His ultimate also bounces permanents and draws you cards, further improving your own control abilities
Part of me doesn't want to fall into the nostalgic trap of thinking Magic had an essence that is now being lost, but the other part knows if Wizards of the Coast is going to keep Universes Beyond legal in Standard, it could at least try harder to make the cards balanced