[@Sophrus], if I make my Leviathan come from the post-LotV era, there is a current ceasefire between the Swarm, the Daelaam and the Dominion, so it's unlikely that Broodmother Kasira (the Broodmother that is going to become stranded) would commit her forces to attack the [i]Hammer of Korhol[/i]. Also, considering this is inter-universal, I don't think that the Overqueen is going to be able to psychically communicate to Kasira's Brood at such a range (or even interdimensionally as it is).