Bridge from Below doesn't work entirely correctly. The abilities have intervening if clause, so the token-making ability should not create the token if
Bridge from Below is no longer in the graveyard as the ability resolves.
The timing also seems strange. The following happened:
Opponent casts
Living End from suspend in his upkeep. He has two creatures out, I have none.
His creatures die, while my graveyard gets reanimated. One of my creatures is
Golgari Grave-Troll. He has no counters and dies, which is a bug by itself, as Gatherer rulings say:
So, presumably it should have counters for all creatures that are being put on battlefield.
I have two opponent's triggers from death of his creatures and two mine triggers from death of my Golgari Grave-Trolls. It's opponent's turn, so his triggers should go on stack first, but it's actually mine that go first and his resolve first, exiling
Bridge from Below.
Then my triggers resolve, and since the intervening if is not correctly implemented, I still get the tokens despite
Bridge from Below no longer being there.