Exploration

You may play an additional land on each of your turns.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Reflecting Pool

{T}: Add one mana of any type that a land you control could produce.

Horned Kavu

When Horned Kavu enters, return a red or green creature you control to its owner's hand.

Fires of Yavimaya

Creatures you control have haste.
Sacrifice Fires of Yavimaya: Target creature gets +2/+2 until end of turn.

Kavu Mauler

Trample
Whenever Kavu Mauler attacks, it gets +1/+1 until end of turn for each other attacking Kavu.

Forest

Flametongue Kavu

When Flametongue Kavu enters, it deals 4 damage to target creature.

Thunderscape Familiar

First strike
Black spells and green spells you cast cost {1} less to cast.

Wild Growth

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

Overrun

Creatures you control get +3/+3 and gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)

Mountain

Rampant Growth

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