Xigpesh's Intoxication

You create a cloud of purple gas that echoes raucous laughter in a 10ft radius at a point you can see within range. Each creature within the radius must succeed on a Constitution saving throw or have their speed reduced by half and subtract 1d4 from all attack rolls.

Casting at higher levels: When you cast this spell using a slot of 3rd level or higher, the subtraction die increases for every two slot levels above the 2nd. For example, 4th level is a d6, 6th level is a d8, and 8th level is a d10.