When Lorwynn saw Hadurt dragged away by a goblin, Lorwynn didn't know whether he should laugh or hurry over and help. It's not like he was confident to face Pestro. It was that Lorwynn was confident that they might hold out with the goblin's help, as he was clearly a god if he could compete with Pestro.
Instead, however, Lorwynn heard Jack's voice in his head, saying, 'Finish the army off! If we don't do it now, we may not get another chance.'
'Alright…' Lorwynn shrugged and flew high up into the air. He overlooked the remainder of the army, gauging its size and getting a rough estimate of bodies. With that in mind, Lorwynn activated a nature spell, gathering green energy all around him before it rained down on the battlefield.
That energy fell over the center of the army, spreading out to cover the last couple of hundred syndicate members trying to run away. Nothing happened at first but powerful green roots burst from the earth to trap the army.