Treetop Village

Treetop Village enters tapped.
{T}: Add {G}.
{1}{G}: Treetop Village becomes a 3/3 green Ape creature with trample until end of turn. It's still a land. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Ferocious Tigorilla

Ferocious Tigorilla enters with your choice of a trample counter or a menace counter on it. (A creature with menace can't be blocked except by two or more creatures.)

Zodiac Monkey

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

Forest

Gorilla Shaman

{X}{X}{1}: Destroy target noncreature artifact with mana value X.

Tree Monkey

Reach (This creature can block creatures with flying.)

Mountain

Kird Ape

Kird Ape gets +1/+2 as long as you control a Forest.

Kogla, the Titan Ape

When Kogla, the Titan Ape enters, it fights up to one target creature you don't control.
Whenever Kogla attacks, destroy target artifact or enchantment defending player controls.
{1}{G}: Return target Human you control to its owner's hand. Kogla gains indestructible until end of turn.