what's with the sweat

In a top-down view of a fantasy battlefield, a character casts a green, beam-like spell that travels across the screen, hitting enemy units and causing a large, white explosion with a green aura. The spell's trajectory and impact are repeated in a loop, with the character and surrounding units remaining in the same position. The setting is a war-torn landscape with stone pathways, purple flowering bushes, and a large, glowing blue structure in the background.