Elven Ambush

Create a 1/1 green Elf Warrior creature token for each Elf you control.

Priest of Titania

{T}: Add {G} for each Elf on the battlefield.

Swamp

Naturalize

Chord of Calling

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.

Shamanic Revelation

Draw a card for each creature you control.
Ferocious — You gain 4 life for each creature you control with power 4 or greater.

Shaman of the Pack

When this creature enters, target opponent loses life equal to the number of Elves you control.

Cut Down

Destroy target creature with total power and toughness 5 or less.

Leaf-Crowned Visionary

Other Elves you control get +1/+1.
Whenever you cast an Elf spell, you may pay {G}. If you do, draw a card.

Llanowar Elves

Elvish Mystic

Steel Leaf Champion

This creature can't be blocked by creatures with power 2 or less.

Elvish Warmaster

Whenever one or more other Elves you control enter, create a 1/1 green Elf Warrior creature token. This ability triggers only once each turn.
{5}{G}{G}: Elves you control get +2/+2 and gain deathtouch until end of turn.

Forest

Woodland Cemetery

This land enters tapped unless you control a Swamp or a Forest.
{T}: Add {B} or {G}.

Craterhoof Behemoth

Haste
When this creature enters, creatures you control gain trample and get +X/+X until end of turn, where X is the number of creatures you control.