Treefolk Seedlings

Treefolk Seedlings's toughness is equal to the number of Forests you control.

Uktabi Wildcats

Uktabi Wildcats's power and toughness are each equal to the number of Forests you control.
{G}, Sacrifice a Forest: Regenerate this creature.

Search your library for a basic land card, put that card onto the battlefield, then shuffle.

{W}{W}, {T}: Destroy target black permanent.

Whenever you cast an enchantment spell, you may draw a card.

Whenever a Forest is tapped for mana, its controller adds an additional {G}.

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G}.