Overcome

Creatures you control get +2/+2 and gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)

Forest

Band Together

Up to two target creatures you control each deal damage equal to their power to another target creature.

Greenwood Sentinel

Vigilance (Attacking doesn't cause this creature to tap.)

Llanowar Elves

Llanowar Visionary

When Llanowar Visionary enters, draw a card.
{T}: Add {G}.

Explore

You may play an additional land this turn.
Draw a card.

Dwynen, Gilt-Leaf Daen

Reach (This creature can block creatures with flying.)
Other Elf creatures you control get +1/+1.
Whenever Dwynen attacks, you gain 1 life for each attacking Elf you control.

Ornamental Courage

Untap target creature. It gets +1/+3 until end of turn.

Elvish Visionary

When Elvish Visionary enters, draw a card.

Harmonize

Timberwatch Elf

{T}: Target creature gets +X/+X until end of turn, where X is the number of Elves on the battlefield.

Llanowar Stalker

Whenever another creature you control enters, Llanowar Stalker gets +1/+0 until end of turn.