Smoke bomb

This metal sphere’s casing is pockmarked with holes and capped with a thick fuse. When lit, it spews suffocating black smoke that heavily obscures a 10-foot cube for 1 minute. Air-breathing creatures within the smoke must make a DC 10 Constitution saving throw, or have disadvantage on ability checks, attack rolls, and saving throws made while breathing the fumes. A wind of moderate or greater speed suppresses the smoke effect for 1 round.