Lando had placed the mark on Han Sen to keep him on a leash, but now he had simply torn the mark off. That told Han Sen how serious of a situation they were in. Lando wasn't bluffing.
Han Sen had only been hovering there for a short time when the horde of unicorns found him again. They rushed toward him in a crazed mass.
Han Sen didn't use his Blood Eye Evil God power this time. Instead, he drew his Ghost Teeth Knife and Thunder God Spike. With them in-hand, he plunged into the field of battle. In a few seconds, he slew a dozen unicorns.
"Xenogeneic Duke hunted: White Unicorn. Xenogeneic gene found. Obtained White Unicorn beast soul."
After killing a few more unicorns, Han Sen received this beast soul announcement. Han Sen took a quick glance into his Sea of Soul and noticed that it was a mount beast soul. He could use it to travel, but it wouldn't fight.