Multiattack

The silenal makes three attacks.

Tankard

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) bludgeoning damage plus 7 (2d6) poison damage. The target must succeed on a DC 15 Constitution saving throw or be poisoned for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Darts

Ranged Weapon Attack: +7 to hit, range 20/40 ft., one target. Hit: 14 (4d4 + 4) piercing damage.

Cause Row (1/Day)

The silenal magically stirs humanoids it can see within 60 feet of it into a frenzy. The frenzied patrons use the statistics of 4d4 commoners or 1 bar brawl. The frenzied patrons don't attack the silenal. The patrons remain frenzied for 10 minutes, until the silenal dies, or until the silenal calms and disperses the mass as a bonus action.