Wañuy

Effect: Choose one creature within range. The target must make a Constitution saving throw. On a failed save, they take 2d8 necrotic damage and are weakened until the start of your next turn (disadvantage on weapon attacks and ability checks).
• On a success, they take half damage and no other effects.
• Visual effect on target: The target's veins blacken and bulge. Their skin begins to pale and crumple inwards.