Spells for a ancestral guardian barbarian/arcane trickster rogue multi class build

[Spo]

Starting a new campaign soon and plotting out this build. Thinking going arcane trickster after lvl 5 barbarian but realize raging prevents a lot of spell slinging - although certain spells can add versatility to out of combat situations.

Don’t know what the rest of the party will consist of and realize I am limited to enchant and illusion spells. Given I’m not investing in intelligence, my DC will be low so target spells will be difficult to land.

This seems to be limiting me to SLEEP and SILENT ILLUSION and the like.

Thoughts please.

[NaughtyTiger]

false life (for your non enchant/illusion)
disguise self

[Talionis]

Create Bonfire is concentration but decent if you can grapple to drag creatures into it. Find Familiar helps with Advantage. Mirror Image is good especially good with Sentinel feat which you may want to trigger off turn attacks of opportunity to trigger Sneak Attack twice a round. Mirror Image also isn’t concentration so you can cast it then Rage and it stays up.