Might of menethil

Might of Menethil consumed corpses but didnt freeze any enemies

Did your opponent have the minion that prevents freezing?

When I use Corpsicle with 3 corpses
and then I use Might of Menethil
Might of Menethil collects the corpses but doesnt freeze. And I dont get Corpsicle back at end of turn.

I expect Might of Menethil to freeze using the 3 corpses
and not receive the Corpsicle back.