My preferred method for using Nevinyrral to create an instant army is finding a way to give it Flash through effects like Leyline of Anticipation or Vedalken Orrery so you can cast it on someone elses turn, then bring it out in response to another players board wipe
Pawpsicle In the short term, Amber and Sapphire is a solid choice of starter deck
Five SoS Gamechangers Under $5 Flow State (Uncommon) Current Price: $4 If you played during the original Strixhaven era, you know the name Expressive Iteration
Not only that, but it can be transformed for one mana
Then you can draw two, and you'll also make a Map token as well, and then you have the ability to draw the top card of your library if it's a land, so you could get a three-for-one for this spell instead of a two-for-one, and you make an artifact for sacrificing to things like Goblin Welder to recur a big artifact from your graveyard or just to maybe grow your Commander for a faster Commander Damage kill fi you don't draw the land
What you should consider: This deck does not feature an MTG Arena code, which, if included, would provide free stuff for the purchaser