Evergreen Army

A druid’s greatest power is to command the forest itself. No other spell proves the truth of this in as direct a manner. When you finish casting this spell, you enter a deep trance that leaves you completely exposed, in this trance you automatically fail any Dexterity saving throws. While in this trance, you call upon the magic of the forest itself, causing the oldest trees in a 1,000 foot radius to be transformed into treants that you roll initiative for and control each of them. You can summon one treant this way for every emerald you utilize. All of their sight is interlinked with yours and can be peered through at any time to create a network of vision.
If you take any action other than continuing to concentrate on this spell, the spell ends immediately and the trees and plants set down roots wherever they may be currently located.