Monogreen: Creating Forests!
Create forests, watch your wisps and oaks grow, and overwhelm your enemies with your HUGE creatures!
Collectors: Everbloom wisp x 3, Wood Elemental x 3, Living Willow x 2 (8).
Thyrian golem can be summoned pretty early if you create some forests. It is a very strong creature and if summoned early can give big advantage.
Removals: Deepwood stalker, Emperor's Command, Voice of Truth.
They are very useful in many situations.
When summoning Everbloom Wisp: If vs red, try to immediately raise its hp to 4 (with elemental or wild growth). If vs yellow, raise it at least to 3 hp. (evade flame burst and soul drain).
Try to only create forests if possible, especially at the beginning. If you can, keep Elementals and Wild Growths for when you summon Wisps.