This question came up in my group recently and I've heard different answers from multiple sources, so I wanted to get the opinion of the BoLS group.
If a Dark Elf Hydra is hit by a template that forces the unit to take an initiative test or be wiped out (Pit of Shades, Skaven bomb [can't remember the exact name of it], etc.), should the initiative test be taken on the Hydra's initiative or the Beastmasters?
My opinion is that it should go off of the Beastmasters as they are controlling the creature and if they can see it coming they would make the beast move out of the way. I have contacted GW customer service 3 times, and all three customer service reps agreed. I was outnumbered by my group however so we've been going off of the Hydra's initiative instead and I have promptly lost my hydra every game since. What is your opinion? Thanks for your thoughts on the matter!