### All Artificer spells have material components and require a focus. 

With the [November 2020 errata to the Artificer class](https://media.wizards.com/2020/dnd/downloads/ERftLW-Errata.pdf), the [Artificer’s Spellcasting feature](https://www.dndbeyond.com/classes/artificer#Spellcasting-1131501) now reads:

> You must have a spellcasting focus—specifically thieves’ tools or some kind of artisan’s tool—in hand when you cast any spell with this Spellcasting feature (**meaning the spell has an ‘M’ component when you cast it**).

You must have a focus to cast any of your artificer spells, which means every artificer spell you cast has an M component, even if the spell description doesn’t say it has M components.