The black light flickered, the power of space attracted the free-floating particles around it, forming a small ion storm. In the empty space, four knights clad in black armor suddenly appeared on horseback. As they emerged from the rift, an undead army surged behind them like a tide. Those swaying undead creatures howled as they crawled out of the rift, followed by undead giants over ten meters high and bone dragons capable of flying in the air.
The four Black Knights raised their swords and swung them forward, countless undead creatures surged forward. Wherever they went, grass withered, streams became turbid, and the earth seemed to tremble because of their footsteps.
"Fire at will!"