The simplest answer is graveyard hate, with cards like Leyline of the Void, Rest in Peace, and Relic of Progenitus being among the best in the format at fighting Dredge and Surgical Extraction also offering a decent amount of value if you can get the timing right (exiling Narcomoeba or Bloodghast makes it hard for Prized Amalgam to return to the battlefield, while getting rid of Creeping Chill with the "exile" trigger on the stack will fizzle the damage)
(Treat it and anything attached to it as though they dont exist until its controllers next turn.) Counter target activated or triggered ability
When every card you play bounces their creatures and spells back to their hand, the game is as good as won
Except for its name and types, the token copies exactly what was printed on the original creature and nothing else (unless that permanent is copying something else or it is a token
Remove all counters from that creature
Nadu, Winged Wisdom is banned in Modern and Commander, the two formats it was conceivably designed for, and a number of other formats as well