If there is one Noxious Ghoul on the battlefield, and then cast Army of the Damned, will all creatures gets -13/-13 until end of turn when the Zombie tokens enter the battlefield or will all creatures only get -3/-3 until end of turn because the Noxious Ghoul dies at that point?
Well, Noxious Ghoul is a Zombie so it won't die to its own effect. But lets suppose that somehow the Ghoul changed creature types. All 13 zombies entered the battlefield at the same time, so Noxious Ghoul sees them all at the same time and each triggers its ability before any of the triggers resolve. The Ghoul's ability does not check to see that it is still on the battlefield, so all 13 triggers will resolve.
Timing Question