copied enemy sargeras with battleworn faceless, used its twisting nether ability, abosulutely NOTHING happened, ability charge was consumed, no effect nth happening.
This is an intended change, live since the last patch, as explained in the patch notes:
[Added 9/19] Sargeras was adjusted to no longer interact with the original Twisting Nether token if he is copied from the enemy board. For example, if you Reverberations an enemy Sargeras and choose “To The Void!”, no minions will be sent to the Twisting Nether. This is an intentional change and the patch notes will be adjusted to incorporate this note. We apologize for the missed communication.
geez this is just lame