Originally Posted by
doogansquest
People can move in their deployment creatively to make things difficult for the Doom. They have to shoot the Trygon before he gets into combat, or just stuck a very tar-pitty unit in his way (like Wraithguard...which munch him if they are the Scythes). The Deathleaper is sort of worth worrying about, but I'd wager they shoot Doom before him. Deathleaper just does cute things, whereas the Doom can be lethal.
All in all, with how much firepower is going around these days, I say it's not uncommon to shoot all three before any of them do real damage. Though I've faced opponents in this edition who simply shoot Tervigons down turn one, shoot the first things that Deep Strike in turns 2 and 3, and then blow holes in the remainder of the army from that point on. Hitting their lines with just a Swarmlord-star and a few gaunts is sad times for a Tyranid player.