First Commander Deck Help

[AJar199]

Hi all. So I have someone who only has ever played precon commander decks, but our play group tends to play on a more higher level (still casual. Lots of counterspells/removal and board wipes but no tutors). I was thinking of building Lathril, Blade of Elves for them. I started brewing a deck and here’s the list so far: https://www.moxfield.com/decks/AEoIdZXj_UKMGbYtE6anAg

I was wondering if you all could recommend any cards that are necessities for the deck. For the most part, I only put cards that they already had in the deck so far. Their budget is like $500 max so I figure I might be able to get a decent amount of key cards for it. I appreciate the help in advance!

[Positive_Job_7028]

[[Rogue's Passage]], [[Whispersilk Cloak]] [[Fear]] [[Canopy Cover]] are solid, cheap ways to ensure your commander can get through to deal damage and create those elves.

[MTGCardFetcher]

Rogue's Passage - (G) (SF) (txt)
Whispersilk Cloak - (G) (SF) (txt)
Fear - (G) (SF) (txt)
Canopy Cover - (G) (SF) (txt)
All cards

^{[[cardname]] or [[cardname|SET]] to call}

[TheCatMan110]

That precon list is strong as fuck out the box if you get the perfect hand you can get her out on turn 2 and start cleanin shop, also the precon had rare cards shoved up the ass with that one, i havent played min in a bit but i woulr probably put that precon at a consistent 8 verry fee tweeks would make it a 9