Unless paired with cards that let your creatures deal their combat damage via their toughness such as Huatli, the Suns Heart, Gauntlets of Light, Assault Formation and, more thematically, Treefolk Umbra your Treefolk will be sitting back and absorbing damage in the early game until you find the cards necessary to go on the offensive
Watermark: Friday Night Magic Illustrated by John Avon Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
In this case, Im getting my specific descriptors of white from the compilation at the MTG Wiki, linked here
All you need are lots of black cards, some way to get them into the graveyard, and then a reliable way to commit a crime
Stealing an artifact is always a good option if they have a good one, and the draw two, discard two mode rips through your deck and finds what you need
You need staying power and evasioncards like Edgar Markov, Isshin, Two Heavens as One, or Rionya, Fire Dancer can help scale your damage across multiple turns