Drix Fatemaker appears to still give trample to creatures with +1 +1 counters on them even after it dies. I was not able to see if the trample was real or just visual because if I had blocked I would have not been able to win the game afterwards. I believe the creatures the opponent controls should not have trample after the Fatemaker dies. They had no other permanents on the battlefield except lands.

I was not able to take a screenshot unfortunately.