Versatile Mage: Infinite Summons, an Army of One

After an accident, Lin Feng transmigrated into Versatile Mage. From the start, he awakened the Summoning System and gained a golden finger that let him merge with his summoned creatures. He thought he could use the Summoning System to reach the pinnacle of life, but instead became a useless nobody anyone could bully. It was all because his Summoning System couldn't summon Contract Beasts, rendering it completely useless. He planned to hold out until the intermediate level and awaken a second system. But during a wilderness training exercise, he discovered the true way to use his Summoning System. It wasn't that he couldn't summon. He just needed to make a sacrifice. He could summon by offering either a spirit essence or a remnant spirit. The more he sacrificed, the more creatures he could summon, with no limit to their number. From that day on, Lin Feng embarked on the path of hunting demons. His summoned creatures kept multiplying as they killed, until he alone could field an army.