I'm running my first ever campaign as DM using the modified Starter Set (Mines of Phandelver). One of the monsters (Nothic) has a stat block (under Actions) that states that the monster has a multiattack with 2 claws, and below that it has two abilities: Rotting Gaze and Weird Insight. They are not listed as spells.
The question was, as a mutliattack with the 2 claws, was the monster also able to use the Rotting Gaze as an action. We looked at similar stat blocks in the monster manual (the closest being a Medusa) and house ruled that it could use all 3 per turn. Looking for clarification.