Akoum Hellhound

Landfall — Whenever a land you control enters, Akoum Hellhound gets +2/+2 until end of turn.

Quirion Ranger

Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

Llanowar Scout

{T}: You may put a land card from your hand onto the battlefield.

Sakura-Tribe Scout

Mountain

Snakeskin Veil

Put a +1/+1 counter on target creature you control. It gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)

Forest

Plated Geopede

First strike
Landfall — Whenever a land you control enters, Plated Geopede gets +2/+2 until end of turn.

Territorial Scythecat

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Landfall — Whenever a land you control enters, put a +1/+1 counter on Territorial Scythecat.

Nature's Claim

Destroy target artifact or enchantment. Its controller gains 4 life.

Burning-Tree Emissary

When Burning-Tree Emissary enters, add {R}{G}.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.