Possibly!  Hold on while I check.  I had to copypasta a ton of stuff...<br/><br/>ETA, yep, I forgot. Sorry about that!  I did not copy the whole of your notes and so missed the obvious.  And they blew their save.  However, while that prevents them from moving, it doesn't stop them from<em>attacking</em>, and Blood Like Water is an attack.  Since I already resolved that attack, I'm going to leave the dice where they fell for now.<br/><br/>But they won't be able to do it<em>again</em>, especially if you guys fall back a bit, and they won't be able to move anywhere else until they either make that Save, the effect ends, or they're all perma-deathed...whichever happens first.