In my cur✱rent adventuring party, we have an Artificer whose species is the Warforged from Eberron (since our setting is the Forgotten Realms, that means the Artificer player is actually from either Lantana or Halruaa), the rest of our party has a human monk/rogue, an elvish druid, a gnomish cleric/sorcerer and a human warlock with an Archfey patron. Yes, we are slightly eclectic.

Warlocks have Eldritch Invocations which create various magical effects without using spell slots, such as Armor of Shadows whic♋h lets the warlock💦 cast Mage Armor without using a spell slots.