HoMM3 HD bug reports.

Yeah, go ahead and use it if you want to get disqualified...
By the way, the last unit still can't be transferred, and sometimes it's really annoying when you have to dismiss an efreet or a viv.

You're just sleeping; it's already been fixed. And in the case of using it specifically to sacrifice the last powerful or fast unit, there are no signs of a violation, but it's no longer feasible.