He took nearly one day and a half to finish killing all these seeds. Every time he freed one group of NPCs, they cheered loudly as they swore allegiance to their new master.
They then joined the skeleton army to surround the two armies. With time, the two armies' morale became zeroed out and any desire to struggle was eliminated.
After Ibro finished here, he didn't ask for permission from the two commanders, as he started killing seeds in their men. That caused a massive blow to the two commanders holding over their two armies.
As they didn't know how Ibro did it, they planned to escape with their loyal aides. Ibro didn't need to move a finger as he ordered his newly joined 20 plus commanders to hunt them down.
The battle was short with no suspense at all, as the two commanders were killed miles before they could reach the teleportation rings zone. Ibro took less than two hours to completely free all the NPCs in the two armies.